Improved content and layout of OFL button and tooltips


also getting rid of duplicated lines and error: 
sys1: PangoWarning: pango_layout_set_text: assertion `lenght == 0 || test !=
The width of that particular dialog box tends to hide useful metadata and require annoying horizontal scrolling, it should probably be made larger.  Too concise is sometimes too confusing...  Such a text + inline logo combination is less than ideal. It's not "adding" an .org (SIL publishes other libre software under other licenses too). I think the text of the acronym of the license itself should be present on its own (more than the name of the .org).
Maybe "Fill in" instead of "Automatically add"? It's a helper that takes away some manual effort.