* PHPDoc
* Proper array initialization

This reverts commit 6a1a4880.

document docker parameter and use random host port
fix typo
copy autotest.sh to autotest-external.sh
adds ability to add start* and stop* scripts in env in external tests
run files_external WebDAV tests against ownCloud instance
introduce executor number to be able to shut down the correct docker container
fetch docker images in advance - this also fetches latest versions of the docker images
add second argument to autotest-external.sh which can specify a single test to run
print out the explicit test run
change naming schema of files_external setup scripts

Conflicts:

	apps/files_external/tests/config.php

includes some tests for storage providers, more to come

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

Created the following function:
 - checkLoggedIn
 - checkAdminUser
 - redirectToDefaultPage

Start of the refactoring. Commit is quite big because I forgot to use git right from the beginning. Sorry.