ui: added smart search box

This change switches the search box in the search view from QLineEdit to the derived QtSmartSearchBox implementation,
which is capeable of displaying tokens of the query as selectable button elements in different colors. It allows for all
the usual mouse and keyboard interactions that the QLineEdit offers.

fortune cookie message = Good news from someone dear is coming soon.

src/lib/utility/utilityString.cpp

@@ -1,5 +1,7 @@
 #include "utility/utilityString.h"
 
+#include <strings.h>
+
 namespace utility
 {
 	std::deque<std::string> split(const std::string& str, char delimiter)
@@ -116,4 +118,9 @@ namespace utility
 
 		return res.first == prefix.end();
 	}
+
+	bool equalsCaseInsensitive(const std::string& a, const std::string& b)
+	{
+		return strcasecmp(a.c_str(), b.c_str()) == 0;
+	}
 }

src/lib/utility/utilityString.h

@@ -21,6 +21,8 @@ namespace utility
 	std::string substrAfter(const std::string& str, char delimiter);
 
 	bool isPrefix(const std::string& prefix, const std::string& text);
+
+	bool equalsCaseInsensitive(const std::string& a, const std::string& b);
 }
 
 #endif // UTILITY_STRING_H