Store: make global fetch count tracking generic.

src/store.tsx

@@ -96,9 +96,7 @@ function credentials(state: CredentialsType = {status: FetchStatus.Initial, valu
 }
 
 function fetchCount(state: number = 0, action: any) {
-  // FIXME: Make it automatic by action properties.
-  switch (action.type) {
-    case Actions.FETCH_CREDENTIALS:
+  if ('status' in action) {
     switch (action.status) {
       case FetchStatus.Request:
         return state + 1;
@@ -108,6 +106,8 @@ function fetchCount(state: number = 0, action: any) {
       default:
         return state;
     }
+  }
+  switch (action.type) {
     default:
       return state;
   }