Simple to use editor component (non-collab for now)

This should be the future of the editor component(s). A simple API for 3rd-party WebODF editor interested, hiding all the internal complexity, so allowing us to throw things around as we need, without breaking things too much for that 3rd-party.

`make product-wodotexteditor` will create a zip file with everything needed for the editor component. Unzipping that file and following the HOWTO should make people happy. So far I successfully managed to follow my own text in there and get happy a little :)

Fixes #295 
Partially solved #195 (besides the compilation).
There might be lot of different editor components in the future, all created from the files in programs/editor (which might then be renamed as well one day). Wodo.TextEditor is simply the first shot at such components, to learn if people like those and pick them up. This unique directory is used to collect all the files needed to create the zip file which can then be offered for download for the Wodo.TextEditor interested, (zip as generated by `make product-wodotexteditor`).

See also Wodo.CollabTextEditor, which is a first non-elaborated draft on a component for session-based editors, for now just done as much as needed to have the pullbox demo still working ;) so do not yet look into it much. In one of the next WebODF (product) releases there would be another product, Wodo.CollabTextEditor or similar, which then would get its own unique directory as well.

So that is why there is this unique directory, to have a place for collecting things to put into the zip file of this component product (structured also that testing things like the example files is directly possible there).