Update tests

- Enable tests for osx.universal platform.
- Export HTML5 (but skip upload as .cast files aren't exported
  properly).
- HACK: Use HTML5 export to generate .import directory for tests
  This way we don't get an error message even if using
  `continue-on-error` set to `true`.

project.godot

@@ -13,37 +13,11 @@ _global_script_classes=[ {
 "class": "GDXterm",
 "language": "GDScript",
 "path": "res://addons/godot_xterm/namespace.gd"
-}, {
-"base": "Reference",
-"class": "WAT",
-"language": "GDScript",
-"path": "res://addons/WAT/namespace.gd"
-}, {
-"base": "Node",
-"class": "WATTest",
-"language": "GDScript",
-"path": "res://addons/WAT/test/test.gd"
 } ]
 _global_script_class_icons={
-"GDXterm": "",
-"WAT": "",
-"WATTest": ""
+"GDXterm": ""
 }
 
-[WAT]
-
-Test_Directory="res://test"
-Results_Directory="res://test"
-Test_Metadata_Directory="res://test"
-Tags=PoolStringArray( "unit", "integration", "unix", "windows" )
-Window_Size=Vector2( 1280, 720 )
-Minimize_Window_When_Running_Tests=false
-Port=6008
-Run_All_Tests=Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":0,"alt":false,"shift":false,"control":false,"meta":false,"command":false,"pressed":false,"scancode":0,"unicode":0,"echo":false,"script":null)
-
-Auto_Refresh_Tests=false
-Display=8
-
 [application]
 
 config/name="Godot Xterm"