updated code for IE 8 support

Xstyle was loading css individually in IE8. CSS has been merged into a
single css file. this will be reverted back to xstyle when IE8 is no
longer supported.
Updated base viewer. added thumbnail hover support to discovery app

if service is configured for thumnails they will display on hover of the
result rows. Clicking footprints now displays popup of configured
footprints columns. Identify widget in result grid has been removed in
favor of the footprint click popup
hide popup when the footprints are hidden
more work on thumbnails
removed NSEW from discovery. fixed band reorder

band reorder not working with newer dojo build
fixed bug in core identify widget

can now hide the locate toolbar in the discovery application
added query builder and locator entries
added layer label support for feature layers

added layer label support for feature layers
Merge pull request #21 from Rrivera5127/master

Thumbnail support added