changes to date url parameters

- 'month' url paramters are now passed with jan=1 and dec=12 instead of javascript notation.

- Remove 'sfyear', 'sfmonth' and 'sfday' url parameters introduced within this development cycle and allow passing of 'year', 'month', 'day' and 'date' (which is an isoformat date) url parameters to Solgema views.