UI: Enable Language Selection

V2 -> V3:
  3a) Move language bar to bottom according to usage frequency.

V1 -> V2:
  2a) Added a missing changed file.

Enable language selection in UI.

Signed-off-by: Hongliang Wang <hlwang@linux.vnet.ibm.com>
Autostart storagepools created from kimchi

V1-V2:
    1. Use boolean type instead of 0/1 as flag.

    2. Add more description in API.md
V1:
    1. Set the autostart flag for storage pools of type 'dir' created from kimchi,
    and disable autostart flag for all other types.

    2. Add Rest API method to toggle autostart flag of storage pool

    3. Add description about this Rest API method in API.md

Signed-off-by: apporc <appleorchard2000@gmail.com>
Align storage header in Storage tab

The storage header was not correctly aligned with the columns in the Storage
tab.
Adjust the width of header elements to fix it.

Signed-off-by: Aline Manera <alinefm@br.ibm.com>