closes #2241
closes #2132
another fix for express deprecations
press / to highlight search input box
#2241
made the acp search a bit more cooler
closed #2242
adding contributing.md to root
parse post in Topics.reply not in Posts.create

makes importer faster if md plugin is enabled
404 now properly reads error messages
and so does 403
found a duplicate language string
#2235
use default 403 message for accounts
closes #2235
forgot to update meta.title.build in socket.io/meta.js
fix post crash from 712bd3938fd2aa733d862decfc737c642193f61e
closes #2116
more user-friendly error messages
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