fix crash of scenery window when selecting the first entry of a given type
Merge pull request #411 from qcz/scenery-crash-fix

Fix scenery window crash
Change staff hire button text, as discussed
Change string to reflect earlier discussion
Initial work on music credits.
Finished decompiling window_music_credits.
Fixed padding for widgets.
Changed place on WC_MUSIC_CREDITS and WC_PUBLISHER_CREDITS.
Merge pull request #413 from Gymnasiast/patch-1

Complete Dutch translation with new staff hire button text
Merge pull request #415 from hexdec/window_credits

Window music credits
Merge branch 'master' into ride-window