Fix missing down migrations

database/migrations/2015_06_10_122216_AlterTableComponentsDropUserIdColumn.php

@@ -30,6 +30,8 @@ class AlterTableComponentsDropUserIdColumn extends Migration
      */
     public function down()
     {
-        //
+        Schema::table('components', function (Blueprint $table) {
+            $table->integer('user_id')->unsigned()->after('group_id');
+        });
     }
 }

database/migrations/2015_06_10_122229_AlterTableIncidentsDropUserIdColumn.php

@@ -30,6 +30,8 @@ class AlterTableIncidentsDropUserIdColumn extends Migration
      */
     public function down()
     {
-        //
+        Schema::table('incidents', function (Blueprint $table) {
+            $table->integer('user_id')->unsigned()->after('message');
+        });
     }
 }

database/migrations/2015_12_26_162258_AlterTableMetricsAddDefaultViewColumn.php

@@ -35,7 +35,7 @@ class AlterTableMetricsAddDefaultViewColumn extends Migration
     public function down()
     {
         Schema::table('metrics', function (Blueprint $table) {
-            //
+            $table->dropColumn('default_view');
         });
     }
 }