add widgets, sizing and basic events for new ride window
Merge branch 'master' into new-ride-window

Conflicts:
	src/window_new_ride.c
	src/window_research.c
add window_new_ride_populate_list
improve new ride window populate docs
fix window_new_ride_populate_list and add window_new_ride_scroll_to_focused_ride
implement scroll mouse events for new ride window
add window_new_ride_paint_ride_information
clear up window_new_ride a bit
finish window_new_ride
Merge branch 'new-ride-window'

Conflicts:
	src/language.c
fix merge error