updateInfo: move updateInfo into apps table

this has many advantages:
* easy to deliver the updateInfo via the apps object
* after updating, the task can clear it
* when apps are deleted, the info is automatically gone

otherwise, it's a mess of deps between apps/updater/apptask/rest routes

box update info is still in a file

dashboard/src/models/UpdaterModel.js

@@ -6,10 +6,10 @@ function create() {
   const accessToken = localStorage.token;
 
   return {
-    async info() {
+    async getBoxUpdate() {
       let error, result;
       try {
-        result = await fetcher.get(`${API_ORIGIN}/api/v1/updater/updates`, { access_token: accessToken });
+        result = await fetcher.get(`${API_ORIGIN}/api/v1/updater/box_update`, { access_token: accessToken });
       } catch (e) {
         error = e;
       }
@@ -39,10 +39,10 @@ function create() {
       if (error || result.status !== 200) return [error || result];
       return [null];
     },
-    async check() {
+    async checkBoxUpdate() {
       let error, result;
       try {
-        result = await fetcher.post(`${API_ORIGIN}/api/v1/updater/check_for_updates`, {}, { access_token: accessToken });
+        result = await fetcher.post(`${API_ORIGIN}/api/v1/updater/check_box_update`, {}, { access_token: accessToken });
       } catch (e) {
         error = e;
       }