ELC+MMM2D: Const. potential feature + Fixes for diel. contrast -1 -1
Moved field output of capacitor-freature to mmm-common, added documentation
Registered field-output command
Fixed P3M-GPU to allow "inter coulomb 0.0"
Merge branch 'capacitor' of git://github.com/KonradBreitsprecher/espresso into capacitor
Cleanup of the MMM2D/ELC-patch
Fixed p3m_gpu testcases to include data in the distribution
capacitor feature now compiles without P3M
removed unnecessary output from test scripts
ELC now also computes correct capacitor energy