Merge branch 'feature-eadprocess'

Adds ActiveMQ message consumer for creating processes passed by goobi-eadmgr tool[1]
which provides a command line utility for reading EAD[2] files and look for
extractable structures to create a process in Goobi. However, its entirely focused
on a bundle/folder/letter structure for digitizing an estate of letters.

[1] https://github.com/goobi/goobi-eadmgr
[2] http://www.loc.gov/ead/
Add simple reconnection if connection to ActiveMQ server got lost.
Explicit closing connection to server before reconnect.
Correct documentation of parameter.
Remove unused imports
Try to reconnect for given  attempts.