JAL-3383 JAL-3253-applet

JAL-3383 JAL-3253-applet

-- Adds FileStoreI interface
-- Makes FileStore.java abstract superclass for FileStoreImpl (for Java)
and FileStoreJS (for JavaScript)
-- Passing all FeatureStoreJSTest TestNG tests
-- Passing all SequenceFeatureTest TestNG tests
-- About 10% faster for Java on TestNG tests.
-- full rendering in < 250 ms for JavaScript -- this is approximately 15
times faster than before I started this experiment.

Platform: timer mark    13.396    0.209    overviewrender 16000 pixels row:14 redraw:false
Platform: timer mark    14.884    0.186    overviewrender 16000 pixels row:14 redraw:false
Platform: timer mark    15.989    0.185    overviewrender 16000 pixels row:14 redraw:false
Platform: timer mark    17.216    0.229    overviewrender 16000 pixels row:14 redraw:false
Platform: timer mark    18.148    0.239    overviewrender 16000 pixels row:14 redraw:false
Platform: timer mark    18.924    0.198    overviewrender 16000 pixels row:14 redraw:false
Platform: timer mark    21.827    0.233    overviewrender 16000 pixels row:14 redraw:false