FIX: Reset changed site settings after import is complete

After an import has finished the site settings should be reset to their
previous values. For example, since 'disable_emails' was set to false
before any import, it wasn't possible to login after the import
(sending email for password reset didn't work).
FIX: destroy CategoryGroup when Category or Group is destroyed
Merge pull request #2733 from kamilbielawski/destroy_category_group_when_category_is_destroyed

FIX: destroy CategoryGroup when Category or Group is destroyed
Merge pull request #2732 from gschlager/fix01

FIX: Reset changed site settings after import is complete
minor copy update
FEATURE: wider search with more context
fix broken spec
got to move inidicator a bit
we need more height
suppress post count on avatar for single post
Merge pull request #2735 from techAPJ/patch-3

suppress post count on avatar for single post