Merge pull request #1008 from am11/master

Code: Reverting #994
Added the LiveScript content type definition
Added dummy LiveScript compiler
Added LiveScript creation listener
Unused references
Implemented LiveScript compiler and added LiveScriptSettings
Updated CONTRIBUTING and README with LiveScript keywords
Meta information for LiveScript
Added script-to-icon mapping. Still needs an actual icon
Added error message pattern for LiveScript
Changed BaseDefinition for LiveScript, resolves #1006
Removes compiled .md files
Removing LiveScript from LegacySettings
Added @am11's LiveScript icon
Merge pull request #1009 from fjdumont/master

Adding a LiveScript compiler and editor