Merge pull request #2 from opengm/master

From opengm/opengm to DerThorsten/opengm
fusion moves
implemented fusion based inference python wrapper and fixed minor bugs
removed not needed link to ad3 in unit-test
fixed minor include bug
removed unneeded files
fixed mqpbo bug
add hl fusion mover
work in progress
refactored fusion and fusion based
new proposal
fixed bug
fixed minor bug
fixed minor bug
made example input smaller since travis was not able to handle it
removed an example from travis
fixed MAJOR bug
minor fixes
minor fixes
re-added mrf to externals