Added accessories-calculator, accessories-text-editor, web-browser, xfce4-notes-plugin, camera-photo, user-trash and user-trash-full in 128 px folders.
accessories-calculator.svg and accessories-text-editor.svg 128x128 pixel included
camera-photo.svg, user-trash.svg and user-trash.svg 128x128 pixels included. Fix a minor error in accessories-calculator.svg
web-browser.svg and xfce4-notes-plugin 128x128 pixels added. All shortcuts working.
added system-run.svg and edit-find.svg to actions/128, catfish.svg and accessories-character-map to apps/128 and accessories-character-map.svg to apps/64
added inkscape to 22, 32, 64 and 128 app folders. Fixed minors erros in inkscape in 48 app folder.
Added thunderbird png icons, like firefox.
Merge pull request #20 from sergiobenrocha2/master

Merge several 128x128 icons, inkscape and thunderbird icons