Rearrange code to prepare for updater feedback
Basic update progress of database update only
Use hooks to send updates from apps
Add maintenance mode entry to config.sample.php
Add back check if installed around background jobs
Only show the version updating to instead of worrying about converting internal to a formatted version
Remove old data directory protection from update, should already have taken place or not working because the server isn't Apache
Modify and include additional update messages from updating apps
Tweak failure message and throw exceptions from updateDbFromStructure()
Reformat long line
Merge branch 'master' into update-progress
Merge pull request #1079 from owncloud/update-progress

Updater progress feedback