Find/replace, suspicious metab, formula/cell sync

Added find/replace. Invalid reactions due to spacing replaced with
suspicious metabolites where metab contains a + with no charge. When a
cell is edited, formula bar shows same text and vice/versa. Fixed
database bug where metabolites table was not dropped on new load.
Fixed error where no meta columns displayed
Merge https://github.com/jimkell/MOST

Conflicts:
	src/edu/rutgers/MOST/logic/ReactionParser.java