add error test case

Change-Id: I5957a2a1841014d17f357d65cea3bbe8556f3ee8
upgrade to Activiti 5.14

Change-Id: I6f2084573987096a05b10f2e1ed8f49a7f2e6dcc
[release/andreas.weise] prepare release 1.0.8
[release/andreas.weise] prepare for next development iteration