Model-manager

* implement call function (and view settings) API for the browser plugin
* all browser tables/models are defined in the browser resources models.py, all
modelmanager tables are abstract models

* implementation of core settings file and project class with commandline interface
* browser plugin: Django app that allows saving and viewing of tables in the browser
* templates plugin: easy read and write of templated model input files
* clones plugin: project cloning with optional linking or ignoring