Initial patch for using post_modified
Fix revision times from getting stamped out
Revert "Fix revision times from getting stamped out"

This reverts commit 3683f3bddc9961c14b56a326b1d474f7d495b274.
Give bbp_fix_post_author some breathing room
Trim the fat, doc some PHP
Improve and beautify bhp_fix_post_modified, and introduce bbp_fix_revision_times to fix inaccurate post revision times on topics
Don't add revisions when posting replies
Update phpdoc to reflect revisions toggling
PHPDoc fix
Add revision toggling to forum last active time updating, and update PHPDoc
Improve bbp_fix_post_modified logic, and improve support for possible revision support for forums
Only run the fix functions when we're not importing
Bail if we don't have a last edited time
First pass at tools.php
Move _bbp_last_edit_time_gmt code to update.php, and establish an upgrade routine