modified test network to test exceptions during parsing of documentation

todo:
 - change to work wirh all exceptions
 - fix white space problems in the output text for Natspec

Conflicts:
	test/libsolidity/SolidityEndToEndTest.cpp

libsolidity/Parser.cpp

@@ -28,7 +28,6 @@
 #include <libsolidity/Exceptions.h>
 #include <libsolidity/InterfaceHandler.h>
 
-
 using namespace std;
 
 namespace dev