Fixed some bugs in file upload and store creation, also commented stuff that should not be used in tools.

Fixed layer POST, fixed parameter mix ups, naming problems and removed unused metadata like isModel and workspace from layers.

Used minidom to try and be more forgiving when parsing sld. I hope this doesn't break anything and is usefull.

First draft, config files are updated, basic plugin handling is in place, but we still need to define the hooks.