removed error.log everything will go to output.log
log signal as well
added stderr piping to output
forkWorker function, pipe new worker output to log
refactor user.create

dont fire filter:user.create if there userData is invalid
no need for double trim :P
no rooms.enter for anons check tid on topic enter
if there is no postData.tid dont notify, ie topic post
fail modeon
escape output
removed old copy from when we used to have ubuntu instructions on the main page
temporary fix until remarkable is updated in markdown plugin

https://github.com/jonschlinkert/remarkable/issues/88#issuecomment-60885589
prevent deleted users belonging to a group from breaking edit functionality