User keystone policy to check if user password can be updated

Keystone have a policy for change password, we need to apply this to
horizon too.

policy:
  "identity:change_password": "rule:admin_or_owner"

Change-Id: Idd35646f9cbe4fadaa96bc85b243ed4f7823d9dd
Closes-bug: 1347354
Updating the environment version

Recent requirements updates have not been reflected in the
environment version.

Change-Id: Icaf4a3260725e6229bc174b72e5a2feeb8fe4cdf
Closes-Bug: #1365107
Fix Cancel button styling

Add borders to the Cancel buttons in the affected html template

Change-Id: I73769a854e8856c8fd759d972bf5adc61fb35666
Partial-Bug: #1364644
Description clean-up for volume actions

Some minor description clean-ups for volume action
'change volume type' and 'upload to image' to remove
'From here you can'.

Also remove unecessary 'required=True' for the field.

Closes-Bug: #1364623

Change-Id: Ia8c1a593e80abf193f26f7cb97bc1ba383383399
Validation check if exceeding vol snapshot quota

Disables "Create Snapshot" action for each volume in the Volumes table,
if the Volume Snapshot Quota is already at max.
Appends "Quota Exceeded" to the action button for user feedback.
Extends "test_get_data" to account for new Cinder api call.
Adds "test_create_snapshot_button_disabled_when_quota_exceeded"
to make sure action button state is altered when snapshots used is equal
to max snapshots.

Change-Id: I56798869f5e870cef2dd81301330b83aade040d4
Closes-Bug: 1333481
Merge "Validation check if exceeding vol snapshot quota"
Merge "Updating the environment version"
Merge "User keystone policy to check if user password can be updated"
Merge "Fix Cancel button styling"
Merge "Description clean-up for volume actions"
Merge branch 'master' of https://github.com/openstack/horizon