Documentation update: work in progress
removed useless ignored directories
renamed the `sha` column to the proper `sha1`
keep uploads reverse index up to date
posts should be post
Remove unnecessary anding with true
Refactor `TopicsController` and remove code duplication
Update sample bluepill config and install docs
fixes in logrotate.conf
Disable log rotation for now
fix up find as you type for the invite into PM function
allow mods to remove users from a PM
improve style a tiny bit
Merge pull request #1038 from ZogStriP/keep-uploads-reverse-index-up-to-date

Keep uploads reverse index up to date
Merge pull request #1042 from Supermathie/sysadmin-docs

Sysadmin docs
Merge pull request #1041 from vipulnsward/refactor_topics_controller

Refactor `TopicsController` and remove code duplication
Merge pull request #1040 from vipulnsward/remove_and

Remove unnecessary anding with true
FIX: Referenced job incorrectly in clockwork
tos and privacy urls redirect based on site settings
Make edit category modal a little taller so scroll bar is not rendered
FIX: `Discourse.Presence` was broken on arrays. The flag button was showing for anonymous users.