fixup! Added logic to process reply to favorite request and update likes...

fixup! Added logic to process reply to favorite request and update likes counter accordingly. Should fix some of cases of doubled likes and likes counter not decrementing.

test/unit/specs/modules/statuses.spec.js

@@ -264,7 +264,7 @@ describe('The Statuses module', () => {
     expect(state.timelines.public.visibleStatuses[0].fave_num).to.eql(1)
     expect(state.timelines.public.maxId).to.eq(favorite.id)
 
-    // If something is favorited by the current user, it also sets the 'favorited' property
+    // If something is favorited by the current user, it also sets the 'favorited' property but does not increment counter to avoid over-counting. Counter is incremented (updated, really) via response to the favorite request.
     const user = {
       id: 1
     }
@@ -281,7 +281,7 @@ describe('The Statuses module', () => {
     mutations.addNewStatuses(state, { statuses: [ownFavorite], showImmediately: true, timeline: 'public', user })
 
     expect(state.timelines.public.visibleStatuses.length).to.eql(1)
-    expect(state.timelines.public.visibleStatuses[0].fave_num).to.eql(2)
+    expect(state.timelines.public.visibleStatuses[0].fave_num).to.eql(1)
     expect(state.timelines.public.visibleStatuses[0].favorited).to.eql(true)
   })