improve div calculation
filter non-US securities
Merge branch 'master' of https://github.com/domveit/StockResearcher.git
Merge branch 'master' of https://github.com/domveit/StockResearcher.git

Conflicts:
	org.djv.stockresearcher/src/org/djv/stockresearcher/parts/SectorSearchPart.java
Merge branch 'master' of https://github.com/domveit/StockResearcher.git
more table columns