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
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"