Add user notifications and display api errors (#10)

Closes #2 

* Add user notifications

* Update re-frame-10x config

* Display api errors as notifications

* Automatically hide notifications after a while

src/cljs/airsonic_ui/subs.cljs

@@ -6,40 +6,38 @@
 ;; FIXME: this is used for cover images and it's quite ugly tbh
 (re-frame/reg-sub
  ::login
- (fn [db]
+ (fn [db _]
    (select-keys (:credentials db) [:u :p])))
 
 (re-frame/reg-sub
  ::user
- (fn [{:keys [credentials]}]
+ (fn [{:keys [credentials]} [_]]
    {:name (:u credentials)}))
 
 (re-frame/reg-sub
  ::server
- (fn [db]
+ (fn [db _]
    (get-in db [:credentials :server])))
 
 ;; current hashbang
 
 (re-frame/reg-sub
  ::current-route
- (fn [db]
+ (fn [db _]
    (:current-route db)))
 
-;; ---
-
 ;; TODO: Make this nice and clean
 
 (re-frame/reg-sub
  ::current-content
- (fn [db]
-   (db :response)))
+ (fn [db _]
+   (:response db)))
 
 (re-frame/reg-sub
  ; returns info on the current song as is (basically the metadata you can read from the file system)
  ::currently-playing
- (fn [db]
-   (db :currently-playing)))
+ (fn [db _]
+   (:currently-playing db)))
 
 (re-frame/reg-sub
  ::is-playing?
@@ -49,3 +47,10 @@
    (let [status (:status currently-playing)]
      (and (not (:paused? status))
           (not (:ended? status))))))
+
+;; user notifications
+
+(re-frame/reg-sub
+ ::notifications
+ (fn [db _]
+   (:notifications db)))