Update ispconfig.css to fix #select_server a that is affected by #sidebar a padding of 10px. Already pr'ed and merged in master via ispconfig/ispconfig3!766. Perhaps can be merged with stable too?

- fixed escaping in lists

Datalogstatus notification implementation (as discussed: https://www.howtoforge.com/community/threads/datalogstatus.73719/)

Removed all inline javascript focus code, general function to protect all password fields including tooltip

When uploading a logo which is smaller than the current ispconfig one, then the logo will be on the left side of the header. In my opinion it will look better when it's centered.
You could vote about it ;)

Fixed issue #3955 DNS module: Limit for maximum zones can be circumvented with "import zone file" function.
Removed TODO string in error template.

- Fixed mailuser login