Removed Fill, ID now Abbreviation

Removed Fill Up, Fill Down, Metabolite Id now Metabolite Abbreviation
(same for reactionsTable). Added "Row " to status bar, removed error
message from status bar.
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.