Comment out mount_file config option

Prevents sample config issues with external storages. Fixes #9734
Added repair step for legacy storages
Fix unit test messing up the transaction on Oracle

Since the unit test is skipped anyway for Oracle, the dropTable() call
should be skipped as well to avoid having a leftover transaction and
cause further transactions to be nested and break the next test suites
requiring transactions.
Explicily close the statement cursors

Fixes the issue that makes SQLite freeze on later tests.
Add a trusted domain wizard

Adds a little button to the trusted domain warning, if an admin clicks on the warning he will be redirected to ownCloud and asked whether he want to trust this domain.

By far not the cleanest code, or clean at all, but does the job and I don't see a reason to make a lot of changes for this little improvement.
Add require_once to update.php due to routing

Fixes https://github.com/owncloud/core/issues/10585
Partially reverts 52d5429768acdb87b2dc2efedc89eb4ad0d29139
explicit routes for files_external
no statement caching for Oracle
Stream downloads from Swift object stores without downloading it first
Merge pull request #7539 from owncloud/repair-legacystorageid

Added repair script to upgrade the legacy home storage ids
Merge pull request #10590 from owncloud/fix-10585

Add require_once to update.php due to routing
Expose setSystemValue
Redirect user after clicking on link
Use DI
Merge pull request #10584 from owncloud/simple-wizard-trusted-domains

Add a trusted domain wizard
Throw exception if file cannot be accessed via http

Format file

Removing calls to deprecated classes and using internal method to get via http

Missed a character

Fix inverted logic
[tx-robot] updated from transifex
[tx-robot] updated from transifex
Merge pull request #9818 from owncloud/fix-mount-file-config

Comment out mount_file config option
Merge pull request #10528 from owncloud/fix-htaccess-check-error

Fix htaccess check error
[tx-robot] updated from transifex