Description of problem:

 While creating tags, I noticed that tag categories don't get alphabetically sorted.

Version-Release number of selected component (if applicable):

MTA 7.0

How reproducible:

Always 

Steps to Reproduce:

1. Create a tag category
2. Create a tag ; Select tag category from step 1

Actual results:

Tag categories are not sorted in Tag creation modal.

Expected results:

Tag categories should be sorted.

Additional info: