block registration in case the job executor dispatcher is not available
| plus add rar-jar to maven deploy phase

Change-Id: I188c3a915b71a365f0f6485e9c0cc1d8bb17a10d
[release/andreas.weise] prepare release 1.0.9
[release/andreas.weise] prepare for next development iteration
upgrade to Activiti 5.15

Change-Id: I7c91df6c6eec56106767534eb06354bd1a864067
[release/andreas.weise] prepare release 1.0.10
[release/andreas.weise] prepare for next development iteration