Fixes profile photo breakpoint oddity.
Adds upload directory to gitignore with exception for dummy-photo.jpg.
Sets photo path on user entity.
Profile updates and photo path assignment changes.

- Updated flash message to report success on updates where nothing changed
instead of an error message.
- Does not overwrite photo_path on future updates without a photo.
Merge pull request #149 from mdwheele/fix-upload-profile-photo

Fix upload profile photo
Merge pull request #148 from mdwheele/fix-profile-breakpoint-formatting

Fixes profile photo breakpoint oddity.
Adds placeholders for features.
Adds feature for checking conference information.
WIP
Finishes conference information feature description. Adds empty register feature.
Adds feature for registering as a speaker.
Adds placeholders for features.
Adds feature for checking conference information.
Finishes conference information feature description. Adds empty register feature.
Updates to feature.
Finishes up speaker authentication feature description.
Adds feature for speaker talk submissions.