Documentation fixes
Changes in this commit:
- Changue «`» to «*» for emphasize: following the mark-up conventions
- Changue «File Toolbar» to «Main Tolbar» -- was confused (an application without main toolbar...) IMPORTANT: This request GUI changes (an improve)
- Some fixes for menu items
- (upercase) -- this must be started into GUI
- Added shorcuts IMPORTANT: I planned to work with the GUI changes (improves)
- Remove confusion about Gimp or GIMP: Gimp image hose format/Gimp brush format
- Improves for last additions to master
- Fixes to :menuselection: IMPORTANT: I request highlighted for :menuselection: tags -- KDE style.