updating error message; adding step by step fetch
updated layouts in navwindow, ossimwindow, mapwindow
removing single and complete fetching - takes more time
adding nc to list; updating actionNames
adding caching for catalog parsing. doesnt seems good as of now
nc viewer update
added progressbar for viewer, seperate plots for depth and FVCOM current Speed. TODO: mutlithreading
updated ui with date/time selector, interpolation
reordering mapwindow; updated date-format
Merge pull request #7 from rashadkm/master

netcdf import and nc viewer