Debug shortcuts

Adds the same debug shortcuts as Chrome dev tools. There were some collisions that needed to be removed. Please verify that you don't use any of the removed shortcuts. @ztbrown @mewdriller @jridenbaugh 

# Added
* (ctrl shift t) Reopen closed tab
* (F8) Resume
* (F10) Step Over
* (F11) Step Into
* (shift F11) Step Out

# Removed
* Show Image Thumbnails (ctrl shift t)
* Toggle bookmark (f11)
* Show bookmarks (shift f11)
* Force step over (alt shift f8)
* step out (shift f8)