frontend: serialize current page to hash instead of query (and use setters for it)

frontend/src/views/Reader.vue

@@ -38,11 +38,16 @@ export default {
     }
   },
   computed: {
-    page () {
-      if (this.$route.query.page) {
-        return parseInt(this.$route.query.page - 1)
-      } else {
-        return 0
+    page: {
+      get () {
+        if (this.$route.hash) {
+          return this.$route.hash.substr(1) - 1
+        } else {
+          return 0
+        }
+      },
+      set (value) {
+        this.$router.push({ hash: '#' + (value + 1) })
       }
     }
   },
@@ -56,7 +61,7 @@ export default {
 
       // set page
       if (page >= 0 && page < this.info.pages.length) {
-        this.$router.push({ query: { page: page + 1 } })
+        this.page = page
       }
     },