Left Arm optics update

1. Replay 646 MeV optics to get correct original root file from which I will extract info.
2. Get optics for all energy setting including 399 MeV
3. Extrapolate 200 MeV optics from existing
4. Update Dx Dy in def_optics.h and generate_autodb.pl, add L.vdc.config=200 option for momentum setting
5. Generate new db_run.dat, move to $DB_DIR
6. Replay new root and generate 01_Optimized.ps in result dir
7. Fix blog tutorial of cakephp, just use 1.2 tutorial not 1.3
8. add deline in c.snippet for vim,  temporally fix minibufexplorer .file bug