Merge pull request #138 from wwitzel3/fix.132-rewrite

Added AJAX example and fixed 30x codes showing as 200s.
fixed exception views colors and classes
fixed dashboard and panels colors
changed title tag
added border to introspection tables
changed icon
Merge pull request #139 from wwitzel3/fix.132-rewrite

Updated docs and screenshots
Merge branch 'fix.132-rewrite' of github.com:Pylons/pyramid_debugtoolbar into fix.132-rewrite
better-document the performance settings
lame attempt at standardizing whitespace
changed leftbar link color
updated screenshots
updated toolbar closed screenshot using new scaffold theme