hdfview

Merge pull request #160 in HDFVIEW/hdfview from master to hdfview-3

* commit 'eea20dc8627bc575aa4c7e990a84aa580087a8d6':
  Lazy fix for updateFont and DefaultTreeView
  Fix bug with "Default" module selection in "Open As" dialog
  Fix potential NullPointerException in ViewModulesPage
  Full support for module loading
  Change external class loading logic
  Add factory classes for the test modules
  Set up the infrastructure for module loading by overriding factories
  Remove GermanTableView classes
  Move modulejar target with other jar targets
  Create separate DataView package for DataView-related classes
  Eliminate FitsFile warnings