Create a live chapter editor page

[dascritch]

• [x] Having a player
• [x] Choosing an audio source URL
• [x] Create and naming chapters
• [x] Moving chapters, sorted by time
• [x] Deleting chapters
• [x] Showing HTML generated source
• [x] Showing HTML generated fragment
• [x] Showing markdown generated source
• [x] Showing wiki generated source
• [x] Integrate in .md file

[dascritch]

Will be really interesting to add in dotclear addon

[dascritch]

See it in action https://dascritch.github.io/cpu-audio/CHAPTERS_ED