change name in webapp from mapreduce to yarn
add a bunch of cleanups in hamster cli side, like merge constants, uniform all prefix to pivotal, etc.
resolve a wrong check that will block user submit mpi-job with serveral programs, we can support this, it's no problem anymore :)
add padding for vpid when make table, make it more beautiful
Merge https://github.com/leftnoteasy-tmp/tmp-res into develop