UX improvements for Launch Instance dialog

This patch solves two UX issues on the Networking tab
of Launch Instance dialog:

1) "nic" is lowercase when the acronyms usually are capitalized.
2) "Selected Networks" and "Available networks" do not follow
the same capitalization convention.

Change-Id: If83f605dc2ebbfd408811634da2bad231356f057
Closes-Bug: #1325684
Prevent error message when creating a user

keystone changed behaviour and didn't add the user
to the specified role. Now it does; this patch
prevents an exception popping up without breaking
with previous versions.

Change-Id: I115a5126b70ae3c7733aa065bf55104f88cc42e5
Closes-Bug: #1260439
Add "Size" column to Image Table

In the class ImagesTable in "project/images/images/tables.py"
was added the size column after disk_format column.

Used the exist filesizeformat filter for format the value and verbose name.

Closes-Bug: #1300622
Change-Id: I047732bc0295ea50d7ddd88745320c0946471d7c
volume details page does not show source image details

Cinder volume details page is updated to show the image
details if the volume is created from the image.

Change-Id: I5d7a06cb18a39c4a252c58fabf3b7187f337fb44
Closes-bug: #1317041
APIDictWrapper getitem lookups fail for non str

The APIDictWrapper class within openstack-dashboards/api/base.py can't
handle the "in" operator correctly.

Also, it will fail if a non-string is passed into it's __getitem__
method. (Which is what is called from a dict lookup.)

The get method also fails on non-strings.

Change-Id: Iaad66d3c6deb81d0570b1a8c6ddf580024fa46e6
Closes-Bug: 1326512
Introduce safer access to resource meters

Storing of meters in the wrapper object attributes is bad. It
can lead to name conflicts, which can theoretically result
in weird bugs.

Change-Id: I7b1a248be52721b0401fba7bf976b9c4e63f71ba
Implements: blueprint ceilometer-api-enhancements
Merge "Add "Size" column to Image Table"
Merge "Introduce safer access to resource meters"
Merge "volume details page does not show source image details"
Merge "Prevent error message when creating a user"
Merge "UX improvements for Launch Instance dialog"
Merge "APIDictWrapper getitem lookups fail for non str"