fix #331; remove tabs, newlines, whitespace sequences upon editing/importing sentences
removed temporary lines
Added clean_whitespace.py.
Added docstrings to clean_whitespace.py.
Added dry_run flag to clean_whitespace.py.
fix #369; add script to strip extra space around/within existing sentences
clean_whitespace.py now writes to a log as well as the console
cosmetic change to clean_whitespace.py
Translations updated via update-translations.sh.
#347 (most recent list), intermediate commit
#347, fix Session reference
#341 Made $sentenceLang and $translationLang params optional

When people add link by clicking on the link icon, or by using some
bookmarlets, these params are not set, so we retrieve the language codes
from the sentences table before saving the link.
Merge branch 'list_cookie'
Merge branch 'master' into cakephp1.3

Conflicts:
	app/controllers/sentences_lists_controller.php
	app/models/link.php
	app/views/helpers/menu.php