Branch

- passes formid with renderfield() and handle_post()
- some renaming and reordening
- reorder replacements
- resolve templates
- NOTE: don't resolve target page from action field anymore
- parse templates from addpage field similar as these from action field
- add syntax %%m(30-11-1975) Fixes #36

Question:
is the syntax `%%m(30-11-1975)` robust enough? or do you think that it will conflict with normal text too often.
Maybe an alternative, such as a function look-a-like syntax:
`bureaucracy-date(30-11-1975,%%m-%%d-%%Y)`
or
`BUREAUCRACY-DATE(30-11-1975,%%m-%%d-%%Y)`

(maybe more commit are coming)