changed 'mark as resolved' icon to only a checkmark based on user feedback.

Change-Id: I839206d30f0f2db158e23d683ff8cdc0e63398c9
Signed-off-by: Michael Davis <michael.s.davis@ibm.com>
diff --git a/app/assets/images/icon-check.svg b/app/assets/images/icon-check.svg
new file mode 100644
index 0000000..e984f55
--- /dev/null
+++ b/app/assets/images/icon-check.svg
@@ -0,0 +1,4 @@
+<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 viewBox="0 0 14 12" style="enable-background:new 0 0 14 12;" xml:space="preserve">
+<polygon points="14,2.2 12.2,0.5 4.7,8 1.8,5.1 0,6.9 4.7,11.5 "/>
+</svg>