Changes for shared hosting and numerous installer fixes

app/Http/Middleware/InstalledCheck.php

@@ -6,16 +6,26 @@
 namespace App\Http\Middleware;
 
 use Closure;
+use Illuminate\Http\Request;
 
 class InstalledCheck
 {
     /**
      * Check the app.key to see whether we're installed or not
      *
+     * If the default key is set and we're not in any of the installer routes
+     * show the message that we need to be installed
+     *
+     * @param Request $request
+     * @param Closure $next
+     * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View|mixed
      */
-    public function handle($request, Closure $next)
+    public function handle(Request $request, Closure $next)
     {
-        if (config('app.key') === 'NOT_INSTALLED') {
+        if (config('app.key') === 'base64:zdgcDqu9PM8uGWCtMxd74ZqdGJIrnw812oRMmwDF6KY='
+            && !$request->is(['install', 'install/*'])
+            && !$request->is(['update', 'update/*'])
+        ) {
             return view('system.errors.not_installed');
         }