RavenDB-825 Update license attributes in a more efficient way
RavenDB-825 - If an error occurred during installation provide a way to show the log file
RavenDB-825 Changing background of bitmaps to gray color
RavenDB-825 Make sure that every error will be visible in the log (if the action is executed by DoAction event then session.log is not visible in the log file, hence we are using INSTALLER_LOG property which will be visible there)