Update login page layout

This update will:

- Change the positioning of the form to be on the left
- Add the built on OpenBMC logo to the bottom right corner of the
screen
- Add the ability to include a GUI custom name using a .env variable.
If the variable is not present, the login page will not include the <h1>
section heading element.
- Remove the word "logo" from the alt attribute for the company logo
image used in the application header and on the login page.

Github story: https://github.com/openbmc/webui-vue/issues/63

Signed-off-by: Derick Montague <derick.montague@ibm.com>
Change-Id: I83ac5aecff0b3858c3ab5f38ab1aaa603d59acf1
diff --git a/src/components/AppHeader/AppHeader.vue b/src/components/AppHeader/AppHeader.vue
index 4e806fb..7211a59 100644
--- a/src/components/AppHeader/AppHeader.vue
+++ b/src/components/AppHeader/AppHeader.vue
@@ -130,7 +130,7 @@
   data() {
     return {
       isNavigationOpen: false,
-      altLogo: `${process.env.VUE_APP_COMPANY_NAME} logo`,
+      altLogo: process.env.VUE_APP_COMPANY_NAME || 'Built on OpenBMC',
     };
   },
   computed: {