[#292] Added `repl:assembly` to build a fat jar for scoobi-repl.
[#292] Remove repl sub project and move script to main source tree.
[#292] Add `repl:dist` to build a tar ball containing the script and fat jar.
Use HADDOP_CONF_DIR if it is already set.
Remove original REPL launch script.

Has been replaced by src/main/bin/scoobi.