Homepage template and styling for top story

[joshdarby]

Changes

This pull request makes the following changes:

• Adds homepage template, less, css, etc.
• Adds mixin for the top term on top of image styling and view more arrow links
• Adds styling for the homepage top story

Desktop:

Top term hover:

Mobile:

Why

For #14

Testing/Questions

Features that this PR affects:

• Homepage template
• Top term on top of image styling
• View more arrow links
• Homepage top story

Questions that need to be answered before merging:

• [x] Is this PR targeting the correct branch in this repository?
• [x] Does the homepage top story look ok?
• [ ] Does the arrow link mixin look ok?
• [x] Does the top story function as expected?
• [ ] Are the colors ok for the Largo Recent Posts widget styling?

Steps to test this PR:

1. Select a post and make it the homepage top story
2. Give it a top term
3. View it on the frontend on desktop and mobile and verify it looks good

[joshdarby]

https://github.com/INN/umbrella-sfpublicpress/pull/44/commits/022be9289cc1e52c367875a92f7502735820f8ea adds styling for the Largo recent posts widget for the secondary posts in the top featured area

Desktop:

Mobile: