Updated build script to handle 'checksum' target

The build script can now be invoked, for example, with the following options:
> ./scripts/build checksum --frontend beta gamma

scripts/builder/backends/devBuilder.py

@@ -18,14 +18,6 @@ class DevBuilder(BackendBuilder):
 		return 'dev'
 
 
-#	def frontEndTempFolder (self):
-#		return os.path.join(self.tempFolder(), 'src', 'main', 'webapp')
-
-
-#	def targetFolder (self):
-#		return self.projectTargetDir
-
-
 	def compileCode (self):
 		pass