another java.util.regex.Pattern.compile() parameter annotation
CR-IU-300 remove outdated RoamingTypePerPlatform
CR-IU-300 remove outdated EP ComponentRoamingType
ComponentRoamingManager should not keep defaults (we use RoamingType.PER_USER by default)
overrides
remove unused methods
cleanup
simplify load from providers – we don't need to filter again (our save do it, in any case it is absurd to store component with global roaming in the project level file, — should be refine later)
IDEA-85961 (Pattern BACKSLASH_PATTERN = Pattern.compile("\\", Pattern.LITERAL) is always marked red.)
simplify some constant conditions and greenify