Added users-window at the side of the irclog
Improved folder stucture and improved images

Folders:
SVG, AI... are now in the originals folder.
Images:
Increased stroke-width for better rendering in browser.
Main-menu position changed to fixed

It will now appear on the screen when more scrolled down than menu +
eyecatcher height.
Fixed irc-log users menu, so it starts under the fixed menu.
added responsiveness/adaptiveness to the main-menu
Video on homepage is now responsive
Merge pull request #9 from sauerbraten-fork/developing

Merge Developing into master