Merge pull request #59 from jmhenriques/master

Major revisions and additions to the former HydrophobicWall class, now aka. StickyWall.
Added off-center dipole-dipole interaction program
Merge branch 'master' of https://github.com/mlund/faunus
off center dipole update
off center dipole fixed on line
Fixed 'Mw' -> 'mw' for mass input in json
Updated dipole example (playground); fixed doxygen math problem
Merge pull request #16 from mlund/master

Update 03.11.2014