added unmark_dirty method
added unmark_dirty method

robotframework/RIDE,robotframework/RIDE,HelioGuilherme66/RIDE,HelioGuilherme66/RIDE,robotframework/RIDE,fingeronthebutton/RIDE,fingeronthebutton/RIDE,HelioGuilherme66/RIDE,robotframework/RIDE,caio2k/RIDE,HelioGuilherme66/RIDE,fingeronthebutton/RIDE,caio2k/RIDE,caio2k/RIDE