Not display loading image for shelved instances

If, any of the instances are shelved through CLI
those instances status are displayed as shelved offloaded
with a loading image.
Displaying the loading image for this status are not correct.
Displaying the loading image is removed for
the shelved offloaded status.
This problem is reported and fixed in #1318558 but this fix is
working only for rescue not for shelved offloaded.
Now it is fixed for shelved offloaded also.

Change-Id: I39d1e2fc1428923824b303f0837b25d736dc0e3c
Closes-Bug: #1352140
Co-Authored-By: Mizielski Robert <robert.mizielski@cloudwatt.com>
Remove "builtins = _" from tox.ini

In Horizon "_" (ugettext_lazy) is defined by usual imports,
so "builtins = _" in tox.ini is unnecessary.

Change-Id: I2d429f5a4783f8da44739da7fe3ba1d6c76f4146
Imported Translations from Transifex

Change-Id: I7580f9bdaae705d406bb12659c36ee8aa04846f4
Merge "Not display loading image for shelved instances"
Merge "Imported Translations from Transifex"
"Device size" field only allow positive values

Changed min value to 1

Change-Id: I00e4b9682e8b3fd0d3677feddd41fc55f22eacf6
Closes-Bug: 1357335
Edit image - made format field as editable

While editing image via CLI we can edit/change
the disk format via '--disk-format' option.
In horizon webpage, edit image form, the format
field is not allowing to edit the disk format since
it is set as non-editable field.
It is differ from the CLI functionality so changed
the format field is editable to sync with CLI.
the choice field is displayed with available choices,
the user can select one from the list.
Change-Id: I6bea35ff8e9d9ae2d170969b9a7fce1b2d657d09
Closes-Bug: #1325123
Merge ""Device size" field only allow positive values"
Merge "Remove "builtins = _" from tox.ini"