Add "New file with wizard"

Add an action for the file menu which calls the score wizard
and inserts the result in a new document.

The existing score wizard is kept in the tools menu
real name
update scheme words
add makeschemedata module
inherit the new token classes with scheme.Word
add scm.ParseSchemeSymbol to the tests list.
change the schemeStart pattern for ignore lilypondStart and lilypondEnt
(#{ #})
Merge pull request #165 from elmamyra/highlight-scheme

Highlight scheme (update)
fix encoding issue in about dialog, patch by Pavel Roskin
fix NameError happening when settings change while outline never has been requested, reported by Mario Moles
Merge pull request #158 from uliska/move-wizard

Add "New file with wizard" Thanks Urs!
Merge branch 'master' of github.com:wbsoft/frescobaldi
move logic whether to create a new Document into the ScoreWizardDialog.

It is cleaner than to rely on setting an instance attribute from outside
add some credits
dont create a new document if there is only one empty, unedited document (gracefully handled with by app.openUrl())
new feature: edit->copy to snippet
accel
nl po update
make Copy to Snippet only work with selected text
move Copy to Image from Edit to Music menu