Re-introduced multiple backgrounds but controlled with an option. Default turned on for ship and off for shore (EPD-234)
EPD-227: Changed CommonENavSettingsPanel to use GridLayout to better accomodate extionsion panels in subclasses
EPD-227: Added GUI support for Intended Route Filter Settings to EPD shore. Updates to these settings are handled at runtime (does not require application restart).
EPD-232: Messaging in notification center
Merge branch '3.0' of github.com:dma-enav/EPD into 3.0