css fix for wide screens, bugfix + few more width removals

I should just have checked all the source files for "width:" the first time..
Includes a bugfix for the problem where comments are pushed below the sidebar.

I added commit messages now :) are those good, or are "notes to lines in a file." better?
Also, should i install git to squash the commits, or do you not mind 1 commit per file?


The "remove float, add margin" trick can also be applied to comments with follow code, but i'm not too sure if the 3rd line is proper coding.
http://pastebin.com/GLBH69cn