only walk an array

Fetch all appconfig values for an app at once and cache the results

Don't use xcache in case admin auth is enabled

Finally kill mdb2 master

Added missing mime types

DB: Support DECIMAL(precision,scale) syntax in XML

This is mostly to fix acceptance tests that have a .cc file.

Also fixed typo in python mime type.

* owncloud/master: (30 commits)
  Added entry with ext storage info
  [tx-robot] updated from transifex
  [tx-robot] updated from transifex
  clarifying license
  remove unused method tail()
  reliable detect encrypted files
  [tx-robot] updated from transifex
  remove duplicated code
  add missing quotes + field declarations
  Do not use xcache variable cache if cache size is 0.
  always show home breadcrumb in files view
  Use DEBUG instead of ERROR when favourites not found. Fix #6419
  update file cache for target file
  only remove encryption keys if a real file gets deleted, skip this method if a file outside of /data/user/files was deleted
  Fixed JS plural function to be per app
  call set password hook because it doesn't get triggered during test execution and fix paths
  Do not use L10n when logging exceptions
  Also add default to the \OCP\IConfig interface
  add default parameter for AllConfig->get*Value()
  always show 'Deleted Files' breadcrumb
  ...

Conflicts:
	lib/private/memcache/xcache.php

Fixed download file from URL error messages

Do not use xcache variable cache if cache size is 0.

remove duplicated code

preserve 3rd party values in  in the Session destructor

Added entry with ext storage info

Added plural translation fallback

Bump the footer down 20px to avoid overlap.

Add support for specifying the precision and scale of a decimal data
type to the XML description language.

See owncloud/core#6475

reliable detect encrypted files

Add default parameter to OC\AllConfig/OCP\IConfig's getValue's