Do not override user-defined Device Size

This change introduces a flag which identifies whether or not the
user has manually set the Device Size field when launching an
instance with a new volume. If the user has made a change then the
value will not be overridden by the logic that sets the Device Size
based on the selected image/flavor unless the user-defined value is
too small.

Change-Id: I1f02fd386a9b6836fb95433d9cb819af4f267d6c
Closes-bug: 1370080
Remove string concatenation related to volume attachment

Translatable string "on" is a part of string concatenation
and it makes difficult to translate it properly.

Change-Id: Ib2bf65791899a3c69087749d3a5fcf5061568b5d
Closes-Bug: #1382874
Imported Translations from Transifex

Change-Id: I7e65f7ae4790ddee25793561f37e494ac2f817b0
Create buttons in network topology respect quotas

Network topology create (networks, routers, instances) buttons should respect
quotas and the buttons should show feedback if the quota is exceeded.

Change-Id: Ide0e461d598b0d623192a5b2455a0ad3340c5683
Closes-bug: 1367678
Merge "Remove string concatenation related to volume attachment"
Merge "Do not override user-defined Device Size"