[PLAT-3397] Remove sass dependencies in ivy.xml and pom.xml
check if directory exists before attempting to create it
[PLAT-3397] Add sass-gem jar to src/main resources
[PLAT-3397] Extract sass-gem to a folder at start and set GEM_PATH env in scripts
[PLAT-3397] Refactor: rename RubySassCompiler to JRubySassCompiler