Preliminar Weatherwax compatibility

* Converted old API calls to jQuery following the devel guide located at
  https://www.dokuwiki.org/devel:jqueryfaq

* Prepended dw_ to all global objects so they still work

* Columns and rows can't be dragged by now. Feature has been commented
  out because a bug on jQuery. Search a FIXME on script/tableeditor.js
  for more information