Revert "disable google, twitter, facebook logins by default"

This reverts commit d7f62f71486b7b96ac158be54bb3da631194b565.
New site setting: `limit_suggested_to_category` - ensures suggested
topics belong to the same category as the current topic and doesn't mix
in other categories.
FIX: Include `status=xyz` in queryParams
change moved post glyph
Merge pull request #2411 from awesomerobot/master

navigation enhancements
BUGFIX: no reading credit for posts you create
One less TODO makes me on little bit more happy
FEATURE: live delete / recover
BUGFIX: total post count could be smaller than filtered posts count
BUGFIX: filteredPostsCount not correctly defined
min trust level to edit wiki had an unreasonable default
BUGFIX: blank preview when loading draft.
FEATURE: worlds dumbest preview sync.
BUGFIX: progress bar was hidden when the composer was open
few fixes to the previous navigation update