NEW: documented __init__ files. Added __RCSID__ and HeadURL as well.
NEW: removed unused imports. Added loggers when returning S_ERROR.
FIX: removed unused imports and variables. Fixed few missing imports.
Cleaned a ton of minor warnings.
FIX: one bug fixed, minor pylint warnings cleanup.
FIX: replaced gLogger with self.log. Fixed minor pylint warnings.
Merge pull request #23 from ubeda/FIX_int_WMSPolishing

FIX WMS pyLint polishing