Re-org HADOOP_FILESYSTEM_MODE into magpie.sbatch subsection
Move HADOOP_DAEMON_HEAP_MAX from general config to core config in magpie.sbatch
Move/re-org HADOOP_MODE into new Hadoop Job/Run configuration subsection, along with formerly general configuration
Rename Magpie_am_I_hadoop_master to Magpie_am_I_master
Move a few additional variables into magpie-common-exports
Make check for SBATCH_TIMELIMIT a core check