inputrc cleanup
Many vimrc changes
Prefixed smad_ to smad functions to prevent collisions
1.  Added function plainhistory
2.  Added .currentTask reminder on prompt
3.  Added generalized function cache
4.  Added functions pgRoot, pgRootSet and pgRootUnset
5.  Added cloneSmadsEnv and dropSmadsEnv functions
6.  Added pgClearSessions
7.  Added variables site, models, migrations, scripts etc