For #36 - fixed incorrect popup rendering for archive imported from GPX format
Updated GWT to 2.7.0 (to use incremental compilation in SuperDevMode) and GXT to 3.1.1 (resolves UI glitches appeared after upgrading GWT to 2.7.0)
For #41 - added first set of custom icons - minivan, sedan and universal. Also now it's possible to select them in device profile.
Updated DTD in gwt.xml to the new URL of 2.7.0