detect if URL already includes protocol, rather than always prepending http://, make sure screenshots are saved using only hostname
bugfix: ratio() is a method, not a property
removing debug- and dead code
slightly more informative/verbose fail output
removing two more lines of debug code
adding method for scanning through CSS looking for problems (depends on tinycss parser). Also using same method from same_styles method - but only for the Firefox tab
make sure CSS code of inline STYLE element is also recorded for inspection. (It's slightly ugly to run this code every time style_sheets property is read?)
adding code to spoof JS environment. This is injected in on_resource_request_starting, but I'm not sure if that's the best place to have it - guess it will run too many times?
slightly clearer logic in CSS problem detection method
adding tests
prepend protocol if it isn't already in the URL - also in the Tab class
Merge pull request #3 from hallvors/master

Various improvements and bugfixes, suggested code to scan for CSS problems