ui: tutorial adjustments

* adjusted the start of the tutorial to work with the "overview" filter.
* fixes some spelling errors in the tutorial.
* tabs can be encoded by "\\t" in the project description.

src/lib/component/controller/CodeController.cpp

@@ -517,8 +517,9 @@ std::vector<std::string> CodeController::getProjectDescription(TokenLocationFile
 	{
 		std::string line = "\t" + lines[i];
 
-		size_t pos = 0;
+		line = utility::replace(line, "\\t", "\t");
 
+		size_t pos = 0;
 		while (pos != std::string::npos)
 		{
 			size_t posA = line.find('[', pos);