logic: fixes all over the place

* fixed refreshing to send another ui refresh message after parsing
* keepContent field for MessageBase so that views won't update
* fixed searchmatching to only weigh uppercase letters next to lowercase ones
* fixed file not jumping back to snippets when activating edge
* clicking into empty space deselects active edge
* clear file manager files on every fetch
* added db transaction for file clearing
* use zooming instead of changing font size

src/lib/utility/file/FileSystem.cpp

@@ -63,7 +63,6 @@ FileInfo FileSystem::getFileInfoForPath(FilePath filePath)
 	return FileInfo();
 }
 
-
 std::vector<FileInfo> FileSystem::getFileInfosFromPaths(
 	const std::vector<FilePath>& paths, const std::vector<std::string>& fileExtensions
 ){