Merge branch 'fix_park_rating' of https://github.com/duncanspumpkin/OpenRCT2
Add functions to open park window to awards/rating

Also update replace some address that have constants/functions
Add news_item_open_subject()
Add function to open park window to guests tab
Change NEWS_ITEM_SCENERY to NEWS_ITEM_RESEARCH
Merge branch 'master' of https://github.com/IntelOrca/OpenRCT2
Merge branch 'open_news_item' of https://github.com/ZedThree/OpenRCT2 into ZedThree-open_news_item
Merge branch 'ZedThree-open_news_item'
Added get_guest_face_sprite small and large functions.
Merge branch 'master' of https://github.com/duncanspumpkin/OpenRCT2 into duncanspumpkin-master
Merge branch 'duncanspumpkin-master'
another typo fixed :)
Cleaning up files and code related to windows
Merge branch 'MaciekBaron-master'
Moved platform specific UI code (MessageBox, DirectoryChooser) into osinterface.c
Merge branch 'master' of https://github.com/mzmiric5/OpenRCT2 into mzmiric5-master
Merge branch 'mzmiric5-master'
Merge branch 'os-specific' of https://github.com/atmaxinger/OpenRCT2 into atmaxinger-os-specific
Merge branch 'atmaxinger-os-specific'
Add functions for closing top/all window(s)