Added Article Model to ActiveAdmin
Added blog resource
Added Paperclip Image to Article

	- Added Description text to Article
	- Added Specs to Article Model
Add author to articles model
Added #most_recents to Acticles
Added specs to #most_recents in Articles model.
Added News section in Home page
Added conditional if image doesn't exist

If an article image isn't present it doesn't create a image tag without a image url
Refactor conditional if to show images.
Modify ActiveAdmin Articles to not show a image when is not present.
Add ActAsTaggable to Articles

	- Added specs to articles to filter by tags.
Merge branch 'articles-tags' into news-section
Delete search field in blog resource.
Deleted files in views/blog folder.
Refactor articles controller.
Change #most_recents in articles model returns only published articles.
Added Tip controllers To ActiveAdmin

	- Added specs to tip Model.
Merge branch 'tips' into news-section
Merge branch 'news-section' into new-site-integration