Changeset 5171

#1260

• still having issues with multiple appdomains on IIS. therefore disabled server heartbeats, so that slaves are not set to offline when they are disconnected, which prevents setting them offline when they are still online (which causes all jobs to be aborted)
• re-enabled some well working abort-statements in ProcessHeartBeat
• added a script in PreBuildEvent.cmd which makes it easier to change the config (for localhost or services.heuristiclab.com as server)
• increased transmission quotas for jobs to 300mb