Store page width in localStorage

frontend/src/views/Reader.vue

@@ -12,6 +12,7 @@
       <p>{{ page + 1 }}/{{ info.pages.length }}</p>
       <p>
         <button :disabled="originalPageWidth" v-on:click="changePageWidth(-5)">-</button>
+        <span>{{ pageWidth }}</span>
         <button :disabled="originalPageWidth" v-on:click="changePageWidth(5)">+</button>
         <br/>
         <button v-on:click="originalPageWidth = !originalPageWidth">{{ originalPageWidth ? 'fixed width' : '1:1' }}</button>
@@ -57,6 +58,10 @@ export default {
   },
   mounted () {
     API.getVolumeInfo(this.$route.params.id, info => (this.info = info))
+
+    if (localStorage.pageWidth) {
+      this.pageWidth = parseInt(localStorage.pageWidth)
+    }
   },
   methods: {
     setPage (page) {
@@ -91,6 +96,7 @@ export default {
     changePageWidth (change) {
       if (this.pageWidth + change > 0 && this.pageWidth + change <= 100) {
         this.pageWidth += change
+        localStorage.pageWidth = this.pageWidth
       }
     },