RC1 released

After fixing some bugs related to module installation and the exit code 1 problem we decided to release a release candidate to ensure getting a high quality 2.0 release. If no further problems are found we will release 2.0 in 1-2 weeks.

Please test this release, especially comments on Windows XP SP2 are welcome!

Changes
+ create dirs cron.daily, cron.weekly, cron.monthly if they don't exist
+ small fixes
+ if no crontab.txt is found by cronHelper.pl when installing the CRONw service it checks for 'crontab' existance
+ fixed several modules that didn't installed correctly
+ execution of command through CMD.exe works now much better