Correctly checks if tree view is on screen

app/assets/javascripts/dispatcher.js.coffee

@@ -77,7 +77,7 @@ class Dispatcher
       when 'projects:show'
         shortcut_handler = new ShortcutsNavigation()
-        new TreeView() if $('#tree-slider')
+        new TreeView() if $('#tree-slider').length
       when 'groups:show'
         new Activities()
         shortcut_handler = new ShortcutsNavigation()

app/controllers/projects/refs_controller.rb

@@ -64,7 +64,7 @@ class Projects::RefsController < Projects::ApplicationController
       }
     end
-    offset = (@offset +  @limit)
+    offset = (@offset + @limit)
     if contents.size > offset
       @more_log_url = logs_file_namespace_project_ref_path(@project.namespace, @project, @ref, @path || '', offset: offset)
     end