Changed label for serach bar in ledger from "Search" to "Filter"
The field is actually more filter than search. This also fixes the bug "In Ledger: Keyboard shortcut for Search (Alt-E) does not work". I could not change the label in scheduled transactions view because it is hard coded in the library. But this should be done as well. BUG: 338296 FIXED-IN: 4.7.2 REVIEW: 121803