I had update my Joomla 3.5 to Joomla 3.6 some or all of those options dissapeared. And all you can see is message : "No installation plugin has been enabled. At least one must be enabled to be able to use the installer. Go to the Plugin Manager to enable the plugins." -
I will show you how to fix the error :No installation plugin has been enabled Joomla 3.6 on Joomla 3.6