Restrict the length of the Security Group name input

There is an allowed maximum length for security group name field, but in
current code, it doesn't check or restrict that from UI side, i.e. user
will be able to type in more than what is allowed. After form
submission, it will fail but there is no clear message telling user what
caused failure.

After adding the code to restrict the max length of the security group
name field, user will not be able to input more than what is allowed,
thus this error will be prevented from UI.

Change-Id: I0f560e78e67a0259343f1a2c820270506653b254
Closes-Bug: #1279472
Updated from global requirements

Change-Id: Ibd817baa8a5ba3a0580e3b42d178cd439128c42b
Remove apps from settings

Those lines are supposed to be replaced by their
counterparts in openstack_dashboard/enabled
and not used any more here. It's a leftover
and was forgotten to remove in
blueprint plugin-architecture

Implements blueprint plugin-architecture

Change-Id: I88ed5886304673391074f1cb681554a9288985e8
Enhance pie chart capabilities

Add support for distribution pie charts

Change-Id: I59e31be87b59c38a59ad861e270d6e20a6493432
Implements: blueprint piechart-enhancement
Merge "Updated from global requirements"
Merge "Restrict the length of the Security Group name input"
Merge "Enhance pie chart capabilities"
Merge "Remove apps from settings"