ui & logic: fixes for release

* smaller indexing progress dialog with bar in the middle instead of golden ratio
* set default code snippet expand range to 3
* no minimum height for project file location element in project setup wizard
* move aggregation and inheritance edges to front when hovered or active
* push parent nodes of active nodes to back to make edges to the active child visible
* properly quit application when window is closed while confirm box is open
* properly quit application when window is closed while indexing
* only count top level nodes for count on bundle nodes
* give noLetterScore to index 0 in search index scoring

bug id = 121

src/lib/data/search/SearchIndex.cpp

@@ -402,7 +402,7 @@ int SearchIndex::score(const std::string& text, const std::vector<size_t>& indic
 		}
 
 		// after no letter
-		bool prevIsNoLetter = (index > 0 && noLetters.find(text[index - 1]) != noLetters.end());
+		bool prevIsNoLetter = (index == 0 || noLetters.find(text[index - 1]) != noLetters.end());
 		if (prevIsNoLetter)
 		{
 			noLetterScore += noLetterBonus;