[Renaming] SearchStrategy previous/next into above/under
[Renaming] Editor addBefore/addAfter to insertAbove/insertBefore
[Renaming] Editor changeTo to replace
[Renaming] Editor jumpUpTo/jumpDownTo to jumpAbove/jumpUnder
[Renaming] before/after to location
[Renaming] Added vocabulary
[Renaming] Took @pyrech feedback into account
Merge pull request #42 from gnugat/tech/renaming

BC break renaming #39