TODO update
core: introducing Logger
configuration: removing Constants struct. Moving configLocation to BasicKeys namespace
core: Logger: log() introduced
main: instantiating Logger
core: Logger: preparations form file opening
main: passing configuration to Logger
core: Logger: basic implementations
core: Logger: removing dependencies to configuration.
main: configuring Logger
database: ASqlBackend: setter for ILogger; Logger used for notifications
core: Logger: adding createPath()

Purpose: dir creation from particular log file
core, system: converting some std:: functionality to Qt's
core: Logger: creating path for log file
core: PluginLoader: using Logger for logging messages
core: Logger: runtime crash fixed

neverending recursion
core: PluginLoader: fixing Severity for errors
removing some iostream includes
core: Logger: formatting log files :)
database: ASqlBackend: passing Logger to Transation