* add design doc for original MOB changes as they were when HBase 2.0 came out
* add design doc for distributed MOB compaction
* remove configuration and commands no longer relevant after distributed MOB compaction
* add in discussion of configuration options
* allow asciimath formulas since we use them in the discussion
closes#1232
Signed-off-by: Wellington Ramos Chevreuil <wchevreuil@apache.org>