first start at refactoring
more refactoring, JSON generation mostly works now
fixed strict warnings
don't use extract (confuses IDEs and code checkers)
some reformatting
made renderers proper render plugins
common is now helper plugin
removed bad import
moved to less, fixes the import
started to split the action class
Preview and Save now works :-)
helper is now superflous
updated styles
upgraded handsontable to 0.10.1
added READMEs
toolbar integration
Update README
more tests for the inverse renderer

This adds a test to the inverse renderer to reproduce the whole syntax
page. It's not a perfect test but should cover a lot of common cases.

The inverse renderer was adjusted to make the test pass. This might
actually have broken things because:

a) the test squashes whitespaces. but whitespaces are significant in
   a lot of DokuWiki's syntax
b) because some whitespace handling was changed it might not give
   desired results for the use in the table editor where line breaks
   need to be avoided
added travis config
make sure there are no nwelines in the table content

yes, it might work in raw syntax with things like the wrap plugin or
code syntax, but that's not supported by the table editor. Sorry.