Update landing.html

Added intro copy, changed sign in language and added a link to the quiz draft for good measure https://docs.google.com/a/varelidi.com/forms/d/1T0FqgLKYw0cLUPvxirTZ2UIvOJHVZYtC71cU8jU1I24/viewform
Update pathway.html

Minor copy fixes on the buttons.
Update app.html

Updated <title>
Update add-panel.html

Changing "wishlist" to "favorites" as per feedback from team. re: consistency between icon and copy.
Update landing.html

Switched "Featured" to "Latest" since that appears to be more accurate and correlates to what we have on the dropdown.
Update landing.html

Last update I promise. Updated text so you get different intro messages dependent on when you are logged in or not.
Update landing.html

Remove duplicate paragraph
Update landing.html

Change button and paragraph order
Remove merge marker
Move conditional paragraphs to left column
Merge pull request #209 from mozilla/content

Copy Updates