ui: fixed syntax highlighting

* fixed strings and number highlights within comments
* fixed quotations not considering escaped quotations within strings
* fixed quotations spanning till last quotation in line
* fixed tag quotations only used after blank space
* fixed multiline comments using correct start and end
* fixed single line comments interfering with multiline comments

bin/app/data/src/sample/comment.cpp

@@ -0,0 +1,17 @@
+/* hallo */
+
+int a; /* hallo */
+
+int b = 6/3/2; /* hallo */
+
+//*
+	int c;
+//*/
+
+// /*
+	int d;
+// */
+
+/*
+	hallo
+// */ int e = 0;