explain the language used for the sign
fixed height of video popup
added cc-by-sa 3.0 license
don't search if input field is empty
Merge branch 'master' of github.com:railsrumble/r13-team-39

Conflicts:
	app/assets/stylesheets/videos.css.scss
Merge branch 'master' of github.com:railsrumble/r13-team-39