Made permalink keep bg map and projection
Fixed multiple bugs found from testing:

Layer bounds cannot extend outside -180,180 range
Google earth exports correctly for polar projections
Map extents are zoomed to correctly
Layer extents do not get automatically zoomed to on layer change
Added button to allow zoom to layer extents
Palette locking works better
Animations/plots/screenshots all work with non-UTC times
Time selector works better with non-UTC times
Authentication is now servlet container managed
Datasets now appear in menus in alphanumerical order
Capabilities documents now validate
+ other minor fixes related to GetFeatureInfo