Merge pull request #2 from rvesse/master

New icons for n-triple and rdf/xml
Move add_node, export_triple, import_triple and traversing to action folder
Remove all $size folders, before fill them with PNG's

To avoid using obsolete (moved, removed, ...) images
Merge branch 'master' of github.com:k00ni/semicon, regenerate all files

Conflicts:
	README.md
	downloads/semicon.tar.gz
	downloads/semicon.zip