Transform Quotas 'inf' to 'No Limit'

We should transform 'inf' into a friendlier string, and make them translatable.

Change-Id: Ib5d0b01a44d6e33b64fdfbcf19372a5a73e60528
Fixes: bug #1250945
Merge "Transform Quotas 'inf' to 'No Limit'"