make Webodf version a global property on the new namespace webodf
Add about dialog to editor component
fixup about dialog version
no need for nested requires with aboutdialog

fixup for Add about dialog to editor component
remove even more unneeded code structures

fixup for Add about dialog to editor component
fixup aboutdialog ko logo as external file
Show WebODF icon in Editor's About dialog button, name component "WebODF Text Editor" for now
Place About button to the very left, not right

to give it a fixed place also on toolbar shrinking
Replace webodf icon image with one directly rendered by inkscape from SVG
Remove "About" from dialog title, just "Learn more..."
Have KO logo in the same line as "Made by ", valigned at line top