Patch Set 1: I would prefer that you didn't submit this

Great step forward :-) I was able to build and install the plugin via Export > Plug-in development > Deployable plug-ins and fragments.

I found the following issues:
- is it ok to have the wikitext jars in the lib folder checked into our repo ? I think we should rather refer to them via plugin dependencies.
- some images are missing:
  - images for previous, next and EGit User Guide links in headers and footers of all documentation pages
  - images for topic "Committing changes" are all missing
- I think the doc plugin should be added to the EGit feature