merge fix
Add redirect from the root of the project

It is useful to make the project webpage on github work properly
Link color scheme
return button
post page layout and style
Post img rounded
Merge remote-tracking branch 'origin/mr-style' into develop

Conflicts:
	app/templates/flickr-feed.html
	app/templates/flickr-post.html
Tag and back arrow improved
Handle pictures with no description
layout fix
Merge remote-tracking branch 'origin/develop' into gh-pages

Conflicts:
	app/css/main.css
	app/scss/main.scss
	app/templates/flickr-post.html