#355 Calculate distance button (#366)

* #355 Calculate distance button in add/edit Flight page

* Styling

* Move add/edit flight logic out of controller and into service layer

* Styling

* Formatting

* Run styleci against modules dir

* Styleci config

* Style fixes in /modules

modules/Sample/Http/Routes/admin.php

@@ -1,7 +1,7 @@
 <?php
 
-# This is the admin path. Comment this out if you don't have
-# an admin panel component.
+// This is the admin path. Comment this out if you don't have
+// an admin panel component.
 Route::group([], function () {
     Route::get('/', 'AdminController@index');
     Route::get('/create', 'AdminController@create');