#940142 by myself: backport textgroup class selector to avoid incompatibility with other modules and ensure the right textgroup value is selected

#953114 by pfrenssen, myself: update text for server to be more descriptive; change default to now point to localize.drupal.org

#954250 by myself: drop support for reimporting .po files now that l10n_update provides comprehensive support for that; no need to duplicating the functionality

#935638 by myself: backport textual fixes to server address field and quicker/better error handling if no server was specified

#774794 by miro_dietiker, dereine, myself: add support for per-user setting to hide the l10n_client, so people can opt out from the performance hit when not in need of the functionality

#673092 idea by wouter99999, code by myself: non-submit buttons were not themeable and were not using the normal form API structures; they should

#550516 by sinasquax and myself: IDs on form elements might not be the same if other forms exist on the page, so we should use other ways to look up the elements we need

#559944 suggestion by murokoma: do not check off the default textgroup cleanup checkbox by default to avoid accidents

#616106 by alex_b, myself: #edit-target might not the ID of the target textarea, so add a specific class to it and use the cascade to look it up

#264203 by neochief, dereine: disable submit buttons while submission happens to avoid users hitting them multiple times

#329472 noticed by hass, patch by mysalf: array_fill() and implode() warnings when no textgroup was selected for cleanup

#361147 by Jose Reyero, mathieu, neurovation.kiwi, jhedstrom, miro_dietiker, dereine: add actual support for different textgroups

1. Handle the special case when all the translatable text is HTML. Escape the code in this case
   but only after the code was trimmed for length.
2. Remove HTML tags from translation for redisplaying in selection list after saving. This
   only affects the display in the selection list. Apply the same HTML tag stripping and
   length limitation as in the PHP code. Also implement the (1) special case above.

#323917 by Jose A Reyero: adding support for l10n_server's new 2.0 remote API which works via XML-RPC (#323914)

#313796 by hass: cleanup only selected text groups; also adds support for reimporting multiple languages at once