ui: warn about file deletion before a repair

ui/src/locales/en.json

@@ -57,6 +57,7 @@
       "repair": "Repair",
       "uninstall":"Uninstall",
       "view_local_files": "View local files",
+      "prompt_repair": "<b>WARNING:</b> All the files under {path} will be <b>deleted</b> as part of the repair process! Do you wish to proceed?",
       "prompt_recover": "Installer data for {name} is corrupted.<br>A repair is required to restore the installation.",
       "prompt":"Are you sure you want to uninstall {name}?",
       "prompt_confirm":"Uninstall {name}"

ui/src/views/ModifyView.vue

@@ -61,7 +61,14 @@ export default {
       this.$router.push('/packages')
     },
     repair_packages: function () {
-      this.$router.push({ name: 'packages', params: { repair: true } })
+      this.$buefy.dialog.alert({
+        title: this.$t('modify.repair'),
+        message: this.$t('modify.prompt_recover', { name: this.$root.$data.attrs.name }),
+        confirmText: this.$t('continue'),
+        type: 'is-danger',
+        hasIcon: true,
+        onConfirm: () => { this.$router.push({ name: 'packages', params: { repair: true } }) }
+      })
     },
     prepare_uninstall: function () {
       this.$buefy.dialog.confirm({