Add feature: recent update page

[KainanSu]

Hi, Tareq!

I implement the requirement 1 in this issue. The result is shown in figure.

It is a simple version but we can get main information from it.

I implemented it by referring to the latest-post widget in wordpress. More details can be found in my pull request.

It is my first time to code a web program, there maybe some irregularities although I had tried to emulate the weDocs style. So please tell me if anything I can improve and I will fix it.

Thanks! I love wedocs and wordpress.