Moved part of gravatar label to new line

<small> was conflicting with @lang
Add gravatar_email
Merge pull request #308 from madd15/patch-1

Fix Gravatar email lang and < conflict
Change rule back to asset_id required_without
Uncomment User section
Change file name to str_random(25)
Added constraint to image to prevent upsizing
Merge pull request #310 from madd15/patch-3

Change file name to str_random(25) & prevent upsizing
Merge pull request #309 from madd15/patch-2

Allow checkout to user or asset
Updated language files