[Sahara] Do not request for nodegroup template if not present

There is no sense in API call to Sahara about nodegroup template
information in case if node group was created without template.

Change-Id: I4c79550b9c36da325d384f08b45dce0bca69a148
Closes-Bug: #1389868
update/cleanup bootstrap 3 icon usage

There are some old instances of <i class='icon-ok'></i>
and glyphicon in the code.
We should be using font-awesome icons instead.

Change-Id: I5269d947716854274a9b6c27b903b01606a787d3
Closes-Bug: #1367476
Fixes Inconsistent usage of Detail / Details

This patch changes all the instances of "Detail" to "Details"

Change-Id: If593f248fc4efc4df7296e27c991241c4bdd5260
Closes-bug: #1396080
Merge "[Sahara] Do not request for nodegroup template if not present"
Merge "update/cleanup bootstrap 3 icon usage"
Merge "Fixes Inconsistent usage of Detail / Details"