Method to insert drawing in SQL
We must find a proper way to install the database
Added solib.sql
Refactoring files structure.
Refactoring database creation (not functional yet). Renaming client files.
Insert drawing in DB
Fix server-side undefined points
Polishing drawing insert before drawing retrieving on connection
Retrieve all lesson's drawings from database on lesson display
SolibLesson.json as a lesson object example
Modified drawings to fit the SolibLesson.json example
Implemented 'slides' notion in SolibLesson object
SolibClient takes DOMElement instead of canvas id.
Included CGScene in Solib.
Refactored constructor
Color and radius in drawings. New slide on front-end.
Updated solib.sql
Handling multiple slides (few bugs)
Bug fixes on new slide
Merge branch 'develop'