refactor watchers helper to return html_safe html
make gravatar helper html_safe when no gravatar is shown
add cukes for adding/removing watchers in issue#show
update changelog
Merge pull request #237 from opf/feature/rails3_repair_changing_issue_watchers

Feature/rails3 repair changing issue watchers
changed resued password wording to one that is a little less complex and a little more polite
Migration to remove end_date column from work packages.
Password reused warning: Improve singular

[skip ci]
Merge pull request #238 from opf/fix/reused_password_wording

changed reused password wording ...
Due/end date fixes.
Due/end date fixes in cukes.
Due/end date fixes in facroties and tests.
Merge remote-tracking branches 'opf/feature/rails3_work_package_creation' and 'opf/feature/rails3' into feature/rails3_work_package_creation