fixes an empty title attribute error
Merge pull request #2944 from digi604/fix-2943

fixes an empty title attribute error
fixes slug collisions with unpublished pages and slug collisions after undo
fixes #2941
fixes #2941
p3 fixes
django 1.5 fix
fixed param overwrite
changed messages
Merge pull request #2945 from digi604/fix-2942

fixes slug collisions with unpublished pages and slug collisions after undo
fixes #2947
Merge pull request #2948 from digi604/fix-2947

fixes #2947 (language switcher and fallbacks)
bumps version to 3.0c2.dev1