add success page
responsive success page (+1 squashed commit)
Squashed commits:
[9a62cd7] styling and content in for success page
Merge branch 'master' into jlaser/success

Conflicts:
	website-guts/assets/css/styles.scss
Rename "row" to "services"
clean up the success page on mobile
Reformat YAML and add if statements to HB template.
Merge pull request #161 from optimizely/jlaser/success-v2

jlaser/success v2. closes #57