* "go to first missing string" link can be displayed (see LANG_DISPLA…

…Y_MISSING_LINKS)

* "go to next/previous missing" links can be displayed (see LANG_DISPLAY_MISSING_LINKS)
* submit button may be repeated (see LANG_SUBMIT_REPEAT*)
* added (empty) "summary" attribute for the <table>'s
* added error_reporting(E_ALL ^ E_NOTICE); in "compare" mode (even in debug environment we know that missing keys are missing strings here, not bugs ;-)
* LANG_DEFAULT_FILE can be now set. moodle.php used to be opened automatically. As it was (and still is) one of the biggest files it usually took a long time to load the page even if you just want to choose the file to translate.
* added links from "missing" to "compare" mode page
* English strings are now key-sorted in "missing" mode
* list of files with missing strings is now displayed at the top of "missing" page
* A lot of changes to support translation of *_utf8_local langugage packs. Needs testing
* Merged with version by Mitsuhiro Yoshida - display icon links instead of text links (I have changed the position of arrow icons to not to be so close each other)