Restructured project to version builds and move CSS into src.

* Added a new version implementation to the build. The build task now triggers
  an increment to the build version.
* Reconfigured the war plugin to filter source files and replace the @version@
  token with the project version and to rename css and js files to include the
  version number in the filename.

resources/main/WEB-INF/classes/datasource.properties

@@ -0,0 +1,9 @@
+dataSourceClassName=com.impossibl.postgres.jdbc.PGDataSource
+dataSource.user=jdbernard
+dataSource.password=wh!73bl@k
+dataSource.database=nlsongs
+dataSource.host=localhost
+#dataSource.cachePrepStmts=true
+#dataSource.prepStmtCacheSize=250
+#dataSource.prepStmtCacheSqlLimit=2048
+#dataSource.useServerPrepStmts=true