Add site agreement expiration

Closes: #88

Reviewed-on: Georgi_Lab/ALVINN_f7#111

src/components/app.vue

@@ -65,6 +65,7 @@
       return {
         rememberAgreement: false,
         siteAgreement: false,
+        dateAgreement: null,
         showDisclaimer: true
       }
     },
@@ -74,8 +75,11 @@
         var loadedSettings = JSON.parse(loadSiteSettings)
         this.siteAgreement = loadedSettings.siteAgreement
         this.rememberAgreement = loadedSettings.rememberAgreement
+        this.dateAgreement = loadedSettings.dateAgreement && new Date(loadedSettings.dateAgreement)
       }
-      if (this.siteAgreement && this.rememberAgreement) {
+      var curDate = new Date ()
+      var agreeStillValid = this.dateAgreement && (curDate < this.dateAgreement.setMonth(this.dateAgreement.getMonth() + 3)) 
+      if (this.siteAgreement && this.rememberAgreement && agreeStillValid) {
         this.showDisclaimer = false
         store().agree()
       }
@@ -91,7 +95,8 @@
         store().agree()
         let newSettings = {
           siteAgreement: this.siteAgreement,
-          rememberAgreement: this.rememberAgreement
+          rememberAgreement: this.rememberAgreement,
+          dateAgreement: new Date()
         }
         let saveSiteSettings = new Promise(
           (saved,failed) => {