MDL-26697 multiple media filtering fixes and improvements

Bug fixes:
    * fixed broken flash resizing via URL
    * upgraded Flowplayer
    * fixed invalid context in format_text()
    * all media related CSS moved from themes to filter and resources
    * fixed automatic pdf resizing in resources

Changes:
    * reworked filter_mediaplugin system settings - grouped by player type instead of individual extensions, added more information
    * improved regex url matching
    * removed old unused players, Eolas fix and UFO embedding
    * image embedding moved to filter_urltolink
    * new Flowplayer embedding API
    * accessibility and compatibility tweaks in Flowplayer
    * SWF embedding now works only in trusted texts, it is now enabled by default (works everywhere if "Allow EMBED and OBJECT tags" enabled)
    * new default video width and height

New features:
    * automatic Flash video resizing using information from video metadata
    * Flash HD video support (*.f4v)
    * Flash video embedding with HTML5 fallback - compatible with iOS and other mobile devices
    * Vimeo embedding
    * no-cookie YouTube site supported
    * HTML 5 audio and video with multiple source URLs and QuickTime fallback
    * more video and audio extensions in filelib.php
    * MP3 player colours customisable via CSS in themes
    * nomediaplugin class in a tag prevents media embedding

filter/mediaplugin/db/upgrade.php

@@ -0,0 +1,47 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Manual authentication plugin upgrade code
+ *
+ * @package    filter
+ * @subpackage mediaplugin
+ * @copyright  2011 Petr Skoda (http://skodak.org)
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+/**
+ * @param int $oldversion the version we are upgrading from
+ * @return bool result
+ */
+function xmldb_filter_mediaplugin_upgrade($oldversion) {
+    global $CFG, $DB, $OUTPUT;
+
+    if ($oldversion < 2011030900) {
+        unset_config('filter_mediaplugin_enable_img'); // migrated to filter_urltolink
+        unset_config('filter_mediaplugin_enable_ram'); // --> rm
+        unset_config('filter_mediaplugin_enable_rpm'); // --> rm
+        unset_config('filter_mediaplugin_enable_ogg'); // --> html5audio
+        unset_config('filter_mediaplugin_enable_ogv'); // --> html5video
+        unset_config('filter_mediaplugin_enable_avi'); // --> wmp
+        unset_config('filter_mediaplugin_enable_wmv'); // --> wmp
+        unset_config('filter_mediaplugin_enable_mov'); // --> qt
+        unset_config('filter_mediaplugin_enable_mpg'); // --> qt
+        upgrade_plugin_savepoint(true, 2011030900, 'filter', 'mediaplugin');
+    }
+
+    return true;
+}