#201799 by yched, quicksketch: compute identation width for draggables better, counting on padding and margin as well as measuring the width at the place where it is used (taking possible CSS overrides into account)

  extensively by mfer but might be slightly experimental still.  Hard to
  test.

- Patch #251402 by quicksketch: text can't be selected via click and drag when the Drupal drag and drop interface is present in IE7.

- Patch #217957 by Pasqualle, yched and quicksketch: tabledrag column hiding not taking headers colspan into account + performance improvements.

- Patch #234785 by Rowanw, yoroy, flobruit, et al: usability: improve visibility of the 'more help' link by adding an icon.

- Patch #216059 by nedjo, theborg, karens, goba, webchick et al: AHAH triggered by text input enter key press breaks autocomplete.

- Patch #216904 by pwolanin et al: if there are more than 21 menu items under a parent, the weights got screwy.

#209720 by theborg: avoid processing resizable teasers before teaser.js is run and the proper wrappers are in place

#208991 by JirkaRybka: target sticky table headers to Drupal output tables only, so it won't sticky random tables in other site content

#208197 by dvessel: back to cloning the table header only in tableheader.js (fixes radio button issues and Safari 2 crashing)

#194590 by scor, JirkaRybka, attiks, dvessel; with heavy testing by catch: fix a dozen issues with sticky table headers

#201141 by yched: instead of 'HTTP error 200' messages when a PHP error occurs, actually display the PHP error message

#197641 by quicksketch and myself: fix drag and drop RTL issues (connector line facing and drag directions)