fix bug in tags_synonyms_copy_tagged_items management command

now it properly checks for errors in the dry run
also, it will never raise Validation or Integrity errors - it prints them and continues

need to re-run the management command:

dry run:
./manage.py tags_synonyms_copy_tagged_items

if looks ok, run for real:
./manage.py tags_synonyms_copy_tagged_items --no-dry-run
remove redundant debug print in notify app
refactor getting approved bill text, to enable fixing #168
Merge branch 'fix_tags_synonym_object_copy' of https://github.com/astupidog/Open-Knesset
fix small bug in reading knesset bill pdf, that trucates titles
add a previous commit forgotten import