Create OC_JSON class, for single point of creating json responses.
No real logic change, this just cleans up the code a bit.

When uploading a file using davfs php warned about a missing argument to
OC_FileProxy_Quota::preFile_put_contents(). Since we get a resource from
OC_Connector_Sabre_File->put(), we have to convert that before running
strlen because it expects a string.

Signed-off-by: Florian Pritz <bluewind@xinu.at>

This also moves session_start in lib/base.php down a bit because we need
OC::$SERVERROOT to get the config settings.

Signed-off-by: Florian Pritz <bluewind@xinu.at>

Signed-off-by: Florian Pritz <bluewind@xinu.at>

Signed-off-by: Florian Pritz <bluewind@xinu.at>

Created the following function:
 - checkLoggedIn
 - checkAdminUser
 - redirectToDefaultPage

Removed global vars are DOCUMENTROOT, SERVERROOT, SUBURI, WEBROOT and CONFIG_DATADIRECTORY

One central place to check for https.

Signed-off-by: Aloisio Almeida Jr <aloisiojr@gmail.com>

Fixed a bug in appconfig, where an initially empty set value led to endless duplicates of this app/key pair.

Path by Elias Probst <mail@eliasprobst.eu>

Also fixed a typo in db.php

make the help section working and pretty. knowledge base entries are fetched via OCS from a different server. cool stuff