Replaced Cake image with WindUp bird favicon.png

Kept the 64x64 dimensions and transparency
 WINDUP-253 Refactor WindupProcessor/Impl
Fix bug causing graph to be re-initialized after configuration
WINDUP-253: Initial attempt at forcing explicit graph initialization
Fixed CSS/JS rendering when unit tests are run outside of Maven, and tweaked to use /tmp/Windup/windupgraph_UoJdqA style paths (to keep related files together)
WINDUP-222: Initial prototype of XML syntax.
WINDUP-222: Add lost commit
WINDUP-222: Fixes after 1st rebase
WINDUP-222: Fix test failures after merge.
WINDUP-222: Ignore the test output files.
WINDUP-222: Remove the old xml folder