replaced the original code with freshly generated code

generated with "paster create -t ckanext ckanext-berlin"
rebuilding extension for CKAN1.8. Page templates are now working (but ugly as hell)
egg and pyc files removed
updated plugin class to new extension programming guidelines

as per
https://github.com/okfn/ckan/tree/2750-add-docs-and-examples-for-idatase
tform-and-igroupform/ckanext/example_idatasetform
as before
as before
as before
dataset form loads, not functional yet

- completely rebuilding the dataset form to be more 1.8-ish, have less
python code in the form itself and tidier code.
- all fields, labels, comments and select options are visible, but ugly
- form is not functional - errors on submit
turned off extras__id__key variables in the dataset form

in preparation of extending the schema properly
creating tag vocabularies for geo and temporal coverage and granularity

instead of hard coding in the Extension class
starting to add a proper dataset schema extension

- defining db_to_form_schema and form_to_db_schema in the extension
class
- using the new fields in dataset form (new and view)
- added temporal_granularity as first example
geografische Abdeckung und Granularität hinzugefügt, Auswahllisten zeigen default oder aktuellen Wert
all extra fields added to dataset form now, but not using date validator
Neue "about" Seite hinzugefügt, Impressum lebt jetzt hier
verschiedene Verschönerungen am Layout

Beauty is in the eye of the beholder.
neues Logo (BODY Logo)
weitere Layout-Anpassungen
license group file added
license group file auf bisherige Auswahl gestutzt

(cc-by, by-sa, by-nc, other-closed)
licenses_group_url setting entfernt, lebt jetzt im globalen CKAN .ini File