topics.getPids will return mainPid as well
closes #1825, closes #1674
delete unread chats on account delete
small tweak to chat height
In response to lukelarris bug report

Configure is in docs, not installing, so needs to go up another directory. (I think, I'm on my iPad)
Made it easier to paste command in MongoDB console

It's a pain to paste MongoDB console commands with linebreaks, as the console adds its own linebreaks. I removed the linebreaks to make it easier.
Merge pull request #1858 from lukelarris/patch-1

Made it easier to paste command in MongoDB console
Merge pull request #1857 from a5mith/patch-1

In response to lukelarris bug report
closes #1855
fix for wrapper
latest translations
closes #1862
closes #1864

doing andrew's //todo's since 1991
special handling for filter:app.load
updated module deps for widget-essentials and markdown
some unused vars
plugins:loaded - using emitter class instead
optional callback for registerHook
allow core to tap into NodeBB's hook system, closes #989
use the new $text query from mongo 2.6