Always draw image on canvas3
Show radio buttons instead of Checkboxes

Makes it much easier to maintain.
Set radio-buttons according to get-parameters
updating when freezeframe changes
Disable freezeframe-input on start
Fixes diff.

Did not work, because of the slideshow the context was tainted with
cross-origin data...
Merging Radio-Buttons and Canvas
Removing console.log
Added Comment+load default /images/
Merge pull request #23 from MaPePeR/radio-+-canvas

Radio + canvas
Slightly better error handeling when getting image link.
Merge branch 'master' of https://github.com/deplicator/xkcdTime_atyourownpace
Few minor updates to cookies, controls, css.