mod/hotpot fix undefined $DB hen restoring HotPot in Moodle 2.x
mod/hotpot fix use of undefined FEATURE_xxx constants in Moodle 2.0
mod/hotpot fix warning about events API in Moodle 2.8
mod/hotpot fix warning about events API in Moodle 2.8
CONTRIB-5100 mod/hotpot fix JMix restart button to move all tiles/segment back to their original positions
mod/hotpot fix JMatch and JMix drag-and-drop on touch screens
mod/hotpot fix JMatch and JMix drag-and-drop on touch screens
mod/hotpot fix audio players on JMatch drag-and-drop
mod/hotpot fix JMix v6+ with audio player
mod/hotpot fix JMatch/JMix drag and drop in Firefox
mod/hotpot fix sorting of sub/superscript chars in keypad
mod/hotpot fix urls for Windows Media Player using 'url' in PARAM tag