minor modifications to about and user show pages
changed some formatting on user profile page, did code cleanup on users.css.scss
placeholder image feature now working on user profile page
addtional tweaks to user profile page
Merge branch 'master' of https://github.com/Ramblethru/Ramblethru
made api divs into de facto show/hide buttons for contents & centered ramble title
added related subreddits API functionality to rambles page
fixed issue with spacing between API divs when collapsed. Is now equal (and minimal).
Merge branch 'master' of https://github.com/Ramblethru/Ramblethru

Conflicts:
	app/assets/stylesheets/rambles.css.scss
Merge pull request #91 from gregburton/master

Many things. 1) Ramble page: API divs act as responsive show/hide buttons, added subreddit links capability, centered title, other assorted formatting things.