Feature/activate activies for osgi

[guedeWebGate]

Making Activities working for OSGI based environments (like XPages)

• Activate Activities as exported package
• Adding the needed namespaces to both serializer, otherwise snx Object has failed during update
• Fix assignedTo
• New setCompletion for ActivityNode
• Correct Namespace for ActivityNode (and also complete NS)
• Cleanup ActivtySerializer

[prb112]

I started looking at your pull request. I'll provide some comments in the next couple of days.

[prb112]

I will the fix for the merge the 1.1.5-SNAPSHOT to 1.1.6-SNAPSHOT separately. actually I double checked the code, it's all at 1.1.6-SNAPSHOT. Please remove that commit and pull the master into your repository

[guedeWebGate]

There was another problem, which we faced in the latest testround.
I'm thinking about writing some tests to cover the serializing and deserizalizing of activities. Let me know what you think about

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