PEP8 E126 has been resolved

Change-Id: Ic5d3b96b6061b7a34e7620d8d09418bd6976fbb1
Partial-Bug: #1085346
Adding Y value unit into linechart popup

- Adding a simplified solution of fetching a meter unit.
- Adding unit into linechart popup, (Rickshaw doesn't support label
  of axis, we may add it in the future, depending on new wireframes).

Fixes bug 1226489

Change-Id: I01aa27578b30e6ad0d27956a3ddd76663f7549ce
Merge "PEP8 E126 has been resolved"
Fix volume snapshot creation

The referenced template was wrong, and the quota usages information
had not been switched to using limits.

Thanks to Nuno Santos and Rohan Kanade for the initial versions of
this patch.

Change-Id: I97f578b84cd1cd4babab2580c60f0132026e3c93
Closes-Bug: #1194506
Update error messeages in Launch Instance

If no image is selected when launching an instance, we will get
an error message "There are no image sources available; you must
first create an image before attempting to launch an instance."
In most cases this message is displayed when a user forget to
select an image. This commit changes the error message more generic
to avoid unnecessary confusion.

Closes-Bug: #1225755

It also changes the menu to display "No images available" if
no images are available rather than "Selct image" with no choice.

Change-Id: Ie5dd0760349c8b030baa2b2465776d0fa6c1767f
Merge "Update error messeages in Launch Instance"
Merge "Adding Y value unit into linechart popup"