Having problems while uploading images in Opencart 1.5.6.4 - opencart

Whenever I try to upload an image to my Opencart 1.5.6.4 website the pop-up menu duplicates the sign in page of the Opencart itself, thus not letting me upload. Please help, I have been looking for solutions for hours. Thank you in advance!

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Github Pages adding avatar image to source

I have been trying to increase the Google Page Speed rankings of my Github Pages site, but I am now getting these avatar images added to the source - and Google Page Speed is penalising me for them.
Does anybody know if there is a Github setting to disable this?
https://avatars0.githubusercontent.com/u/22068367?v=3&s=64
https://avatars3.githubusercontent.com/u/22068367?v=3&s=460

Upload a document and display it to the user straight away

Requirement :
I should upload a document (say ppt and pdf) and display it straight away to the User. Note: The ppt and pdf should be displayed like a webpage for viewing
Questions:
1. Is there any out of the box solution for this in Refinery CMS?
If Yes, will I be able to try the same in the demo site provided from Refinery CMS? Let me know.
Thanks,

Opencart Information pages not visible

I am using opencart 1.5.3.1. None of the Information pages are displayed on the website. I can see the pages and the text in the admin though. Any ideas... please help.
Thanks
Enable it in Admin->Catalog-> Data tab->Status

how to make a login first page to enter into the joomla based website?

i am very beginner in web development and making my first project website. please help me i want to make a website in joomla 2.5. i want to use a login page to enter into the website because for the moment i want keep everything behind the door. only users with password will enter into the site. i tried to search on the below link but could not succeed.
http://docs.joomla.org/Screen.menus.edit.15#Internal_Link_-_User
please anyone help me.
alot of thanks in Advance)))
you can get this working by setting up access level of all your menu items as registered. Except the one you want to use for login page.
I would not recommend setting up access levels on your menu at this stage of building your site.
If all you're trying to achieve is that everyone has to have a username and password to get to the site, I would use folder security through your hosting control panel(CPANEL or PLESK probably).
Setting up Folder security here will mean users have to login to get to the site but the site can be built as if it were public.
Setting menu security in Joomla can lead to confusing beginner experience when items don't show and you can't figure out why.

adding app to facebook page

I'm new to facebook apps, and actually all I want is to add a 'contact us' tab to a 'like page' that I'm helping to manage. I have setup a server with PHP code, and opened an facebook app. (I left the SSL part empty because my server dose not support SSL.) And now I'm just trying to add the app to the page, but I can't find where... It's probably just a link I haven't noticed yet, but I can't find it.
I've googled around the internet, but all explanations I found where old, and didn't help me.
Just for clearness: I want to know how to add an existing facebook app to an existing facebook page
Thanks.
https://www.facebook.com/dialog/pagetab?app_id=YOUR_APP_ID&display=popup&next=YOUR_URL
Here the documentation
https://developers.facebook.com/docs/reference/dialogs/add_to_page/