app/common/directives/app-navigation.html

<nav>
	<ul id="nav__top-level" ng-style="navStyle">
		<li>
			<a class="btn-overview" ng-class="{opened: firstLevel == 'overview'}" href="#/overview/system" ng-click="change('overview')" tabindex="1">
				<span class="">
					<svg version="1.1" xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" viewBox="0 0 40 40" class="nav-icon">
						<path d="M23.9,18.2l3.3,3.3l1.1-1.1L23.9,16l-7.8,7.8l-3.3-3.3l-1.1,1.1l4.4,4.4L23.9,18.2z"/>
						<path d="M5,8v24h30V8H5z M33,30H7V12h26V30z"/>
					</svg>
					Server overview</span></a>
		</li>
		<li>
			<button class="btn-health" ng-class="{opened: firstLevel == 'server-health'}" ng-click="change('server-health')" tabindex="9">
				<span>
					<svg version="1.1" xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" viewBox="0 0 40 40" class="nav-icon">
						<polyline class="st0" points="32,12.9 32,16 8,16 8,8 27,8 "/>
						<rect x="8" y="16" class="st0" width="24" height="8"/>
						<rect x="8" y="24" class="st0" width="24" height="8"/>
						<line class="st0" x1="19" y1="12" x2="27" y2="12"/>
						<line class="st0" x1="11" y1="12" x2="13" y2="12"/>
						<line class="st0" x1="19" y1="20" x2="27" y2="20"/>
						<line class="st0" x1="11" y1="20" x2="13" y2="20"/>
						<line class="st0" x1="19" y1="28" x2="27" y2="28"/>
						<line class="st0" x1="11" y1="28" x2="13" y2="28"/>
						<polygon points="36.4,4 37.5,5.1 32.4,10.2 29.5,7.4 30.7,6.2 32.4,8 "/>
					</svg>
					Server health
				</span>
			</button>
		</li>
		<li>
			<button class="btn-control" ng-class="{opened: firstLevel == 'server-control'}" ng-click="change('server-control')">
				<span>
					<svg version="1.1" xmlns="http://www.w3.org/2000/svg"  x="0px" y="0px" viewBox="0 0 40 40" class="nav-icon">
						<line class="st0" x1="8" y1="12" x2="32" y2="12"/>
						<line class="st0" x1="8" y1="20" x2="32" y2="20"/>
						<line class="st0" x1="8" y1="28" x2="32" y2="28"/>
						<line class="st1" x1="24" y1="28" x2="28" y2="28"/>
						<line class="st1" x1="18" y1="20" x2="22" y2="20"/>
						<line class="st1" x1="12" y1="12" x2="16" y2="12"/>
					</svg>
					Server control
				</span>
			</button>
		</li>
		<li>
			<button class="btn-config" ng-class="{opened: firstLevel == 'configuration'}" ng-click="change('configuration')">
			<span>
				<svg version="1.1" xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" viewBox="0 0 40 40" class="nav-icon">
					<path d="M31.5,20c0-0.6-0.1-1.2-0.2-1.8L35,15l-3.1-5.1l-4.4,1.4c-1.1-0.9-2.3-1.6-3.6-2.1L23,5h-6l-1,4.2c-1.3,0.5-2.5,1.2-3.6,2.1
						L8.1,9.9L5,15l3.7,3.2c-0.1,0.6-0.2,1.2-0.2,1.8c0,0.6,0.1,1.2,0.2,1.8L5,25l3.1,5.1l4.4-1.4c1.1,0.9,2.3,1.6,3.6,2.1l1,4.2h6l1-4.2
						c1.3-0.5,2.5-1.2,3.6-2.1l4.4,1.4L35,25l-3.7-3.2C31.4,21.2,31.5,20.6,31.5,20z M32.4,25.4L31,27.7l-2.9-0.9l-1.1-0.4l-0.9,0.7
						c-0.9,0.8-1.9,1.3-2.9,1.7l-1,0.4L22,30.3L21.4,33h-2.8L18,30.3l-0.2-1.1l-1-0.4c-1.1-0.4-2.1-1-2.9-1.7l-0.9-0.7l-1.1,0.4L9,27.7
						l-1.4-2.3l2.4-2.1l0.8-0.7l-0.2-1.1c-0.1-0.5-0.1-1-0.1-1.5c0-0.4,0-0.9,0.1-1.5l0.2-1.1L10,16.7l-2.4-2.1L9,12.3l2.9,0.9l1.1,0.4
						l0.9-0.7c0.9-0.8,1.9-1.3,2.9-1.7l1-0.4L18,9.7L18.6,7h2.8L22,9.7l0.2,1.1l1,0.4c1.1,0.4,2.1,1,2.9,1.7l0.9,0.7l1.1-0.4l2.9-0.9
						l1.4,2.3L30,16.7l-0.8,0.7l0.2,1.1c0.1,0.6,0.1,1,0.1,1.5s0,0.9-0.1,1.5l-0.2,1.1l0.8,0.7L32.4,25.4z"/>
					<path d="M20,15c-2.8,0-5,2.2-5,5s2.2,5,5,5s5-2.2,5-5S22.8,15,20,15z M20,23c-1.7,0-3-1.3-3-3c0-1.7,1.3-3,3-3c1.7,0,3,1.3,3,3C23,21.7,21.7,23,20,23z"/>
				</svg>
				Configuration</span></button>
		</li>
		<li>
			<button class="btn-users" ng-class="{opened: firstLevel == 'users'}" ng-click="change('users')">
				<span><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32" class="nav-icon"><path d="M16 21c5.523 0 10-4.477 10-10S21.523 1 16 1 6 5.477 6 11s4.477 10 10 10zm0-18c4.411 0 8 3.589 8 8s-3.589 8-8 8-8-3.589-8-8 3.589-8 8-8zM24 23H8a4 4 0 0 0-4 4v4h24v-4a4 4 0 0 0-4-4z"/></svg></span>
				<span>Users</span>
			</button>
		</li>
	</ul>
	<!--<ul class="nav__second-level btn-overview" ng-style="navStyle" ng-class="{opened: (showSubMenu && firstLevel == 'overview')}">-->
	<!--<li ng-class="{'active': (path == '/overview' || path == '/overview/system')}" tabindex="2">-->
	<!--<a href="#/overview/system" ng-click="closeSubnav()">System overview</a></li>-->
	<!--</ul>-->
	<ul class="nav__second-level btn-health" ng-style="navStyle" ng-class="{opened: (showSubMenu && firstLevel == 'server-health')}">
		<li ng-class="{'active': (path == '/server-health/event-log')}">
			<a href="#/server-health/event-log" tabindex="7" ng-click="closeSubnav()">Event log</a></li>
		<li ng-class="{'active': (path == '/server-health/inventory-overview' || path == '/server-health/inventory')}" ng-click="closeSubnav()">
			<a href="#/server-health/inventory-overview">Hardware inventory</a></li>
		<li ng-class="{'active': (path == '/server-health/sensors-overview' || path == '/server-health/sensors')}">
			<a href="#/server-health/sensors-overview" ng-click="closeSubnav()">Sensor data</a></li>
		<!--<li ng-class="{'active': (path == '/server-health/power-consumption')}"><a href="#/server-health/power-consumption" tabindex="4" ng-click="closeSubnav()">Power consumption</a></li>-->
		<li ng-class="{'active': (path == '/server-health/unit-id')}">
			<a href="#/server-health/unit-id" tabindex="6" ng-click="closeSubnav()">Server indicator</a></li>
		<!--<li ng-class="{'active': (path == '/server-health/diagnostics')}"><a href="#/server-health/diagnostics" ng-click="closeSubnav()">Diagnostics</a></li>-->
	</ul>
	<ul class="nav__second-level btn-control" ng-style="navStyle" ng-class="{opened: (showSubMenu && firstLevel == 'server-control')}">
		<li ng-class="{'active': (path == '/server-control' || path == '/server-control/power-operations')}" tabindex="3">
			<a href="#/server-control/power-operations" ng-click="closeSubnav()">Server power operations</a></li>
		<li ng-class="{'active': (path == '/server-control/bmc-reboot')}">
			<a href="#/server-control/bmc-reboot" tabindex="8" ng-click="closeSubnav()">Reboot BMC</a></li>
		<li ng-class="{'active': (path == '/server-control/remote-console')}">
			<a href="#/server-control/remote-console" tabindex="5" ng-click="closeSubnav()">Serial over LAN</a></li>
	</ul>
	<ul class="nav__second-level btn-firmware" ng-style="navStyle" ng-class="{opened: (showSubMenu && firstLevel == 'configuration')}">
		<li ng-class="{'active': (path == '/configuration' || path == '/configuration/network')}"><a href="#/configuration/network" ng-click="closeSubnav()">Network settings</a></li>
		<!--<li ng-class="{'active': (path == '/configuration/date-time')}"><a href="#/configuration/date-time" ng-click="closeSubnav()">Date & Time</a></li>-->
		<!--<li ng-class="{'active': (path == '/configuration/security')}"><a href="#/configuration/security" ng-click="closeSubnav()">Security</a></li>-->
		<!--<li ng-class="{'active': (path == '/configuration/file')}"><a href="#/configuration/file" ng-click="closeSubnav()">Configuration File</a></li>-->
	</ul>
	<ul class="nav__second-level btn-firmware" ng-style="navStyle" ng-class="{opened: (showSubMenu && firstLevel == 'firmware')}">
		<li ng-class="{'active': (path == '/firmware' || path == '/firmware/bmc')}"><a href="#/firmware/bmc" ng-click="closeSubnav()">BMC firmawre</a></li>
		<li ng-class="{'active': (path == '/firmware/server')}"><a href="#/firmware/server" ng-click="closeSubnav()">Server firmware</a></li>
	</ul>
	<ul class="nav__second-level btn-users" ng-style="navStyle" ng-class="{opened: (showSubMenu && firstLevel == 'users')}">
		<li ng-class="{'active': (path == '/users' || path == '/users/manage-accounts')}">
			<a href="#/users/manage-accounts" ng-click="closeSubnav()">Manage user account</a></li>
	</ul>
</nav>