added initial skeleton and test for generating crash logs
added actual information into crash log, and fixed test accordingly
updated appscale init message to also mention GCE
not printing name of exception in red anymore on failure since we now log it to the crash log
updated old-style appscale tools to generate crash logs if they fail, and exit with a return code of 1 in that case
formatting crashlog message nicer
Merge pull request #238 from shatterednirvana/crashlog

Automatically creating crash log if any AppScale Tool fails