Refactored script configuration

Single line scripts are declared as string instead of array.
All mulitiline scripts moved to separate files.
Applescript files are declared in scripts object.
remove useless else clause
reorganize file
put scripts path in variable
Merged master
Merge branch 'master' into separate_applescript_files
remove is_running script file
refactor getArtwork
Merge branch 'master' into separate_applescript_files
make callback optional
replace transformer function with util.format

execScript now accept extra param argument
tidy