Support deleting multiple scenes (#630)

* Improve layout and add buttons
* Move functionality into ListFilter
* Make modal style dark
* Convert scene options into edit scenes dialog
* Add delete scenes dialog
* Clear selected ids on delete
* Refetch after update/delete
* Use DeleteScenesDialog in Scene page
* Show scene check boxes in small screens
* Change default multi-set mode to set

graphql/schema/schema.graphql

@@ -105,6 +105,7 @@ type Mutation {
   sceneUpdate(input: SceneUpdateInput!): Scene
   bulkSceneUpdate(input: BulkSceneUpdateInput!): [Scene!]
   sceneDestroy(input: SceneDestroyInput!): Boolean!
+  scenesDestroy(input: ScenesDestroyInput!): Boolean!
   scenesUpdate(input: [SceneUpdateInput!]!): [Scene]
 
   """Increments the o-counter for a scene. Returns the new value"""

graphql/schema/types/scene.graphql

@@ -99,6 +99,12 @@ input SceneDestroyInput {
   delete_generated: Boolean
 }
 
+input ScenesDestroyInput {
+  ids: [ID!]!
+  delete_file: Boolean
+  delete_generated: Boolean
+}
+
 type FindScenesResultType {
   count: Int!
   scenes: [Scene!]!