python-poppler-qt4 url
make sure python 2.6 remains supported; fix #367
fix #371: add smart neutral direction pref to scorewiz
preference to write version or template template in a new empty document (wish #370)

fix #370
upd chlog
not run when default template is used
shorter
oops
wording
pot/nl po update
dont run autocompile if the document does not generate output
replace non-alphanumeric characters (except "-") in output-suffix (just like LilyPond does it)

close #373
upd chlog
dont mark a new template as compilable if not complete() and not has_output()
implement and close #341
tyop
implement MainWindow.cleanStart

this is called when no document is open. Currently newDocument is called
but we could devise a nice opening screen. Also call this on closeall and
when a session switched to does not contain any documents.
pot, nl.po
all print statements py3 compatible
Merge branch 'master' of github.com:wbsoft/frescobaldi