Renamed Notification mixin's warn and error methods.

Renamed to `notifyWarning` and `notifyError` respectively.

Those names can often clash with other properties defined on components
that extend the mixin (like entities).

platypush/backend/http/webapp/src/components/Light/Animate.vue

@@ -229,7 +229,7 @@ export default {
       const eventType = this.animationRunning ? 'stop' : 'start'
       const selectedLights = Object.entries(this.selectedLights).filter((light) => light[1]).map((light) => light[0])
       if (!selectedLights.length) {
-        this.warn('No lights have been selected')
+        this.notifyWarning('No lights have been selected')
         return
       }
 

platypush/backend/http/webapp/src/utils/Notification.vue

@@ -8,14 +8,14 @@ export default {
       bus.emit('notification-create', notification)
     },
 
-    warn(msg) {
+    notifyWarning(msg) {
       this.notify({
         text: msg,
         warning: true,
       })
     },
 
-    error(msg) {
+    notifyError(msg) {
       this.notify({
         text: msg,
         error: true,

platypush/backend/http/webapp/src/views/Dashboard.vue

@@ -106,7 +106,7 @@ export default {
       const template = (await this.request('config.get_dashboard', { name: name }))
 
       if (!template) {
-        this.error(`Dashboard ${name} not found`)
+        this.notifyError(`Dashboard ${name} not found`)
       }
 
       this.parseTemplate(name, template)