Fix size propagation over shared storage boundary

Etc timezones don't exist for .5 and .75 offsets

Check whether the file id is valid, before using it to delete the previews

proper filename for "require version.php"

LDAP: set up paged search even if limit is 0

Convert 'abcpassword' to 'abcpass' during setup

This allows autoconfig files to use 'dbpassword' instead of 'dbpass', which
is more consistent with config.php

adjust list of errors, more compact and readable

Fix totally broken AppStore code...

[sqlite] Use an atomic implementation on sqlite for insertIfNotExist() + use it in the file cache ...

As it turned out the AppStore code was completely broken when it came from apps delivered from the appstore, this meant:

1. You could not disable and then re-enable an application that was installed from the AppStore. It simply failed hard.
2. You could not disable apps from the categories but only from the "Activated" page
3. It did not show the activation state from any category page

This code is completely static and thus testing it is impossible. We really have to stop with "let's add yet another feature in already existing static code". Such stuff has to get refactored first.

That said, this code works from what I can say when clicking around in the AppStore page GUI. However, it may easily be that it does not work with updates or whatsever as I have no chance to test that since the AppStore code is not open-source and it is impossible to write unit-tests for that.

Fixes https://github.com/owncloud/core/issues/14711

Refactor \OC\Memcache\Factory

Caches divided up into two groups: distributed and local. 'Low latency' is an
alias for local caches, while the standard `create()` call tries to get
distributed caches first, then local caches.

Memcache backend is set in `config.php`, with the keys `memcache.local` and
`memcache.distributed`. If not set, `memcache.distributed` defaults to the value
of `memcache.local`.

Make sure we use Jasmine 2 for running JS unit tests