Merge pull request #20 from isuftin/master

GXP modularization, map initialextent removal
Merged isuftin's master
Refactoring: moving retrieveStatStores functionality into StatsStore.load() and updating map.js to use the refactored store.
Refactoring: moving RParser functionality into StatsStore.js
Merge pull request #21 from tkunicki-usgs/master

Changes to enable use of server-side integrated WMS GWC cache.
Memoizing calls to StatsStore.load
added options to enable tiling
Merge pull request #22 from tkunicki-usgs/master

added options to enable tiling
Merge branch 'master' of github.com:USGS-CIDA/glri-afinch

Conflicts:
	glri-afinch-web/src/main/webapp/js/Data/retrieveStatStores.js
minor fixes
Merge pull request #24 from cschroed-usgs/master

Refactoring functionality into a custom Ext data store class
Enhancement: Deep refactoring of how the map handles layers. Have completely moved to Tom's layer scheme. Trying to figure out how we're going to work zooming and layer ordering without needing to use the slider panels provided in the demo