Log tab added to download and remove logs

[Salandora]

Added API support for log files.
Added a tab to easly manage log files.

[foosel]

Sorry for the late reply to that...

I like the idea, I'm just not so sure regarding the position (as in, another tab). Something like log files should probably only interest people who are also allowed to enter the settings, the regular user would probably not be interested in them (I'm open for arguments there though!). So I'd rather see this somewhere in the settings dialog. Opinions? :)

[Salandora]

Well you're right it might be misplaced, I'll move it to the settings and check if it makes it nicer :)
Could take a while, working on the filemanager branch for folder support.

[Salandora]

Log tab is now in Settings

[foosel]

Sorry that this took so long, will take a bit more time yet to work through the backlog of pull requests, you were quite the busy bee and I was out of commission thanks to back issues. In any case, big thanks! :)

I made some adjustments to the pull request, added API documentation, restricted access to admins, did some cosmetical things, stuff like that.