* this seems to be required when using the new QProcess API.
* this also required to remove quotes that were added to path args because otherwise the Python indexer would mistake absolute paths for relative paths.
* in addition: add unloadable sourcegroup to visualize, load and save information when loading a project that contains source groups that are not supported by the build
* removed unused utilityMath
* removed some unused functions from utility
* moved time related utility functions to TimeStamp
* moved path objects from utility to app/paths
* moved objects in lib to lib/app
* removed duplicate confirm methods in DialogView
* moved utilityFile to utility/file
* removed uint typedef and replaced with size_t everywhere
* removed boost header in utilityUuid
* Added new Source Group type SourceGroupCustomCommand to UI and ProjectSettings
* The Source Group executes a specified command on every source file
* The variables $SOURCE_PATH, $PROJECT_PATH, $DB_PATH, $STORAGE_VERSION can be passed
* The commands are executed after all other source groups finished indexing
* The command is executed with working directory set to project directory
* Errors during command execution are shown as status update and in the Status View
* SourceGroupCustomCommand cannot be partially cleared, when one file needs clearing the project must be fully re-indexed