Generate stable etags for local files

Fix PHPDoc

Stop my IDE and Scrutinizer from complaining.

Setting moment locale based on user selection

Add type hinting to functions

Add missing DB rollback functionality

Cleanup handling of temporary files

disable database migration unit tests for MSSQL

It's only reasonable to have proper type hinting here which might even help us to catch bugs.

Use function outside of loop

Otherwise the function is executed n times which is a lot of overhead

Make files non executable

Prevent division by zero

There is not much sense in having these files marked executable, we should avoid that.

Load avatar in header via PHP

Remove unreachable statement

Potentially fixes https://github.com/owncloud/core/issues/11742

* fix #7484
* use UID, css, and div instead of span

implement localizations based on punic

fixing windows max depth test

Cleanup database handling

[master] Fix S3 connection regression

Fix S3 folder creation for new AWS API