Resolve "Logout of tutors after inactivity"

Closes #22 (closed).

frontend/src/components/Login.vue

@@ -63,10 +63,10 @@
         this.loading = true
         this.getJWTToken(this.credentials).then(() => {
           this.loading = false
-          this.$router.push('/student/')
           this.getExamModule()
           this.getUserRole()
           this.getJWTTimeDelta()
+          this.$router.push('/student/')
         }).catch(() => { this.loading = false })
       }
     }