fixed oledbhelper, extracted some hardcoded values
made viewrequest more flexible
added email command
Reorganized some methods, improved approve and email calls

The existing email query strings should work now with at most some changes to names.
Approve can be called with just an ID now as well.
fixed documentation
email bugfix; remember workmonth id
added link.html and put android redirect in default.aspx
fixed returning empty array when there are no time entries for a given grant-month