Unbreak master page rendering in ODPs.

Restricted the `z-index: 1` hack for draw|frame to
frames within office|text, since it was intended for
ODTs in the first place.
Merge pull request #531 from adityab/zframe

Unbreak master page rendering in ODPs.
Make html files of editor and viewer HTML5 validated

Check done with http://validator.w3.org/check
Merge pull request #528 from kossebau/validatedHTML

Make html files of editor and viewer HTML5 validated
Add section "Creating webodf.js" to README.md
Do not duplicate the README in the error messages
Merge pull request #530 from kossebau/buildInstructions

More build instructions
Split Editor into woeditor and wocoeditor

* create needed editor structure divs ourselves
* use classes for styling of editor structures
* use namespaced, numbered element ids to allow more than one editor
move fullscreen pinch-zoom into own class FullWindowZoomHelper
make all editor toolbar actions configurable
Add about dialog to editor component
rename editor-compiled.js-target to editor-target for now
dump trying to create a singlepersoneditor zip
Make WebODFEditor.Instance a class, add API dox to WebODFEditor methods, use Node.js-style callbacks
Make WebODFCollabEditor.Instance a class, add API dox to WebODFCollabEditor methods, use Node.js-style callbacks
Add HOWTO-woeditor.md

fixup howto
Add README.md to programs/editor