#192056 by effulgentsia, Dave Cohen, andypost, hswong3i, geodaniel, pwolanin, and dahacouk: Ensure user's raw login name is never output directly.

- Patch #559658 by sun, dropcube: store filter settings per format, general API clean-up and documentation improvements.

- Patch #546336 by sun, dropcube: code clean-up and documentation improvements for the filter hooks.

- Patch #244904 by edkwh, keith.smith: renamed 'input format' to 'text format' based on UMN usability study.

- Patch #245115 by kkaefer, John Morahan, JohnAlbin et al: after a long discussion we've decided to make the concatenation operator consistent with the other operators.

#200069 by keith.smith: new standard for 'more information' links in module help texts, as the handbook we referred to before was renamed

#197297 by DanW (as GHOP 17), and keith.smith: clean up lots of help texts, update to drag and drop functionality, drupal.module removal, etc

#154064 by pwolanin: get hook_help() up to speed to menu changes, allowing router path based lookups, and also full path argument lookup with a passed argument array