Trail UI fixup: 'all' param fix and view rearranging.
Trailhead UI updates.
Added trailsegment uploading.
Added trail/trailhead/segment listing links to all pages.
Partial setup instructions.
More setup instructions.
Even more setup instructions.
Controller authorization cleanup.
View authorization fixes.
Added cancel button to edit actions.
Added basic Paperclip photo uploads for trails.
Photo display adjustments.
Added S3 support for photos & ability to delete photos.
Readme updates.
Merge branch 'auth'