Add first version of the frontend

As of now the only usable functionality is signin in/out and managing
authorized users, and even then there is much room for improvement.

Change-Id: Ib87fc6866f69113a230187710de8644b78391917
diff --git a/frontend/src/pages/KillSwitches.vue b/frontend/src/pages/KillSwitches.vue
new file mode 100644
index 0000000..e4fd9f6
--- /dev/null
+++ b/frontend/src/pages/KillSwitches.vue
@@ -0,0 +1,7 @@
+<script>
+export default {};
+</script>
+
+<template>
+  Kill switches!
+</template>