create EPL sessions in onRequestDoc, not in onLogin (fix for #13 and #5)
don't count users with ?bot=1 in url in readonly-view
set the statuscode to 404 when a document could not be found
don't crash when a doc is *only* visited by bots
don't show full login form on small screens, #53
Added viewport-<meta> to <head> to make iOS happy, #53
more tweaks for display on small screens
moved hörsuppe-reference out of table
remove body padding on small screens
clean up old EPL sessions every hour
Upgraded log4js to 0.6.x and use alwaysIncludePattern in log4js-dateFile-config
don't create sessions for groups with whom the user is already authed
Merge branch 'epl-create-sessions-in-requestdoc', fix #13, fix #5
fix layout of buttons in login,  register and profile, #53
fix button of register #53
refactored etherpad.ejs header code and removed useless if in epl-loading-code
moved header of document-view into doc.ejs since it is not special to EPL
Merge branch 'master' into snapshots-and-reviews-for-docs
added snapshot link in doc-view