* fix JS unit tests

* add addVendorScript & addVendorStyle
* refactoring of addScript and addStyle
* add shortcuts vendorScript and vendorStyle

Potentially fixes https://github.com/owncloud/core/issues/11678

Fixes https://github.com/owncloud/core/issues/8420

...

Quickfix for https://github.com/owncloud/core/issues/11064

adding console command to generate javascript translation files based on existing php translation files
read server side translations from json files

Moved search result type translations to search.js

Load JS translations earlier

Translations need to be loaded earlier to make sure that some JS files
like search.js get access to translations at this time.

This requires the template initialization to be moved to after session
initialization, because only after the session we have access to the
current language.

remove translation.php

Added addTranslations and fixed de.js file

Fixed de.js to use OC.L10N.register() and use to correct expected
format.

Added JS unit tests for OC.L10N class

Include translations JS script for all apps

fix docstrings

adjust copyright date

another copyright date update

another header update

implement third headers argument, fix indention, fix docstrings

fix docstrings

Composer's autoloader is rather better than the OwnCloud autoloader's
handling of non-OC classes. Plus we can rely on upstream Composer to
maintain it and not worry about it ourselves.

With this change, we drop the bits of OwnCloud's autoloader that
handled non-OC classes, and register the classes that were being
handled by that code with Composer's autoloader instead. As these
dependencies are converted to actually being managed by Composer,
the explicit registrations can be dropped as they won't be needed
any more.

Since OwnCloud's autoloader isn't going to handle non-OC classes any
more, we no longer need to test to make sure it does it right.

drop unneeded registerPrefix() and registerClass() from autoloader

Now we're not handling anything but OC's own classes, these are
unnecessary.

error out if composer autoloader is not found (thanks bantu)

We're never going to be able to work without the autoloader, if it's not
there we should just throw our hands up and surrender.

Also support closing tags with no text content given

Conflicts:
	lib/private/template.php

This commit will make the supported DBs for installation configurable within config.php. By default the following databases are tested: "sqlite", "mysql", "pgsql". The reason behind this is that there might be instances where we want to prevent SQLite to be used by mistake.

To test this play around with the new configuration parameter "supportedDatabases".

When doing a PROPFIND on the root and one of the mount points is not
available, the returned quota attributes will now be zero.

This fix prevents the expected exception to make the whole call fail.

Stop my IDE and Scrutinizer from complaining.