Fixes#2393
Importing run configurations from .run/ and .idea/ skipped every JarApplication entry because there was no equivalent type. Adds a JAR Application run configuration (path to JAR, VM options, program arguments, JRE, working directory, environment) that runs java [VM options] -jar <jar> [args] and debugs over JDWP like the Application type, and maps JarApplication on import (JAR_PATH, VM/program parameters, working directory, alternative JRE path, envs).