* [ ] Check if formatted text is well formed, if not show text and highlight possible problem lines (instead of browser showing error message)
* [ ] Add links to older article versions
* [ ] Better vCard layout
* [ ] Correct alignment for to do list bullets
* [ ] Support for tables
* [ ] show tags when editing page (maybe even have separate field)
* [ ] Show trail of visited pages (instead of having to use back button, esp. when pages were edited
* [!] vCard categories don't show up in tag tree

