refactor the options dialog
Issue #22: Compile against NB 7.3
increase module version to 1.4
issue #16: Choose a license, which is compatible to the embedded libs - license this plugin under EPLv1.0

* plus changes in description about license and features
[ui] redesign the options panel (moved hint about project settings to top-right, "Show Notifications" checkbox is now always enabled)
[doc] added github link to description
[license] add header to source files
[refactor] rename packages to de.markiewb.netbeans.plugins.eclipse.formatter (was org.netbeans)