Add Search Feature to the CMS.

[RChaubey16]

• Add search template for displaying the results.
• Add controller and model method for the same.

[JayKandari]

Sample requirements breakdown:

• Show the search button on header.
• create a search results page (route)
• make sure the search form is getting submitted as a GET REQUEst.
• datasource for search results - articles/blog only.
• search in the following fields of articles - title, body, categoryname.
• when showing search results - show following fields - title, short body description, if image is available then show a thumbnail also. show author also.
• show pagination -
• show categories on right sidebar... article categories..
• on clicking those article categories, user should be redirected to the same search results page but with the selected category.