make sure class file is loaded once
fixing windows max depth test
Migrate new app settings to AppFramework

Let's migrate those two new files.
Special treatment for Oracle
first steps of sidebar for personal and admin settings
implement sidebar fro personal settings - bad kung-fu
Add some basic sanitization

Better to be safe than sorry ;)
rework getFileSize
small fix
ok; still some bugs that had to be fixed
Add an EventLogger interface to allow apps to get a log of the request timeline
Add QueryLogger interface to allow apps to get a list of used queries
Activate the query logger on connect
Rename namespace to Diagnostics
Log some basic events
Rename to NullQueryLogger
Allow adding events that hapend before the event logger was loaded
Log some additional events
remove legacy class OC_Updater
move some deprecated usage of OC_Config and OC_AppConfig to \OC::server