[hack] Rename *ary_operator syntax to *ary_expression
[hack] Rename *ary_operator syntax to *ary_expression

Summary:
The BinaryOperator node is actually a BinaryExpression node, renamed it and the UnaryOperator nodes.

Also touched up some formatting in the schema generator.

Reviewed By: ericlippert

Differential Revision: D3924322

fbshipit-source-id: 7659c2724d6a8abae511626e03377f091ddab38c

gabro/flow,ylu1317/flow,AprilArcus/flow,TiddoLangerak/flow,gabelevi/flow,AgentME/flow,MichaelDeBoey/flow,nmote/flow,gabelevi/flow,AprilArcus/flow,popham/flow,jgrund/flow,claudiopro/flow,facebook/flow,samwgoldman/flow,gabelevi/flow,mroch/flow,fletcherw/flow,JonathanUsername/flow,chenglou/flow,AprilArcus/flow,TiddoLangerak/flow,ForbesLindesay/flow,jamesgpearce/flow,chenglou/flow,fletcherw/flow,nmote/flow,AgentME/flow,ylu1317/flow,MichaelDeBoey/flow,popham/flow,fletcherw/flow,popham/flow,jamesgpearce/flow,samwgoldman/flow,mroch/flow,mroch/flow,jamesgpearce/flow,samwgoldman/flow,AprilArcus/flow,gabro/flow,facebook/flow,AprilArcus/flow,gabelevi/flow,facebook/flow,fletcherw/flow,nmote/flow,popham/flow,MichaelDeBoey/flow,mroch/flow,claudiopro/flow,jamesgpearce/flow,TiddoLangerak/flow,chenglou/flow,jamesgpearce/flow,JonathanUsername/flow,gabelevi/flow,mroch/flow,facebook/flow,jgrund/flow,mroch/flow,nmote/flow,samwgoldman/flow,AgentME/flow,ylu1317/flow,claudiopro/flow,gabelevi/flow,JonathanUsername/flow,popham/flow,ylu1317/flow,facebook/flow,TiddoLangerak/flow,popham/flow,gabelevi/flow,jgrund/flow,AprilArcus/flow,ForbesLindesay/flow,facebook/flow,jamesgpearce/flow,claudiopro/flow,JonathanUsername/flow,JonathanUsername/flow,jgrund/flow,ForbesLindesay/flow,nmote/flow,ForbesLindesay/flow,nmote/flow,chenglou/flow,jgrund/flow,facebook/flow,popham/flow,TiddoLangerak/flow,jgrund/flow,fletcherw/flow,nmote/flow,MichaelDeBoey/flow,gabro/flow,ForbesLindesay/flow,claudiopro/flow,chenglou/flow,gabro/flow,samwgoldman/flow,gabro/flow,JonathanUsername/flow,MichaelDeBoey/flow,AgentME/flow,fletcherw/flow,AgentME/flow,gabro/flow,ylu1317/flow,chenglou/flow,mroch/flow,jamesgpearce/flow,samwgoldman/flow,ForbesLindesay/flow,samwgoldman/flow,JonathanUsername/flow