v1.0-beta: Merge pull request #100 from openjournals/math

Adds:

• Math support via MathJax: #100
• Tooltips on UI elements for clarity: #94
• Idea 'dismissing' to hide ideas you don't want to see again: #86
• State-based publishing flow to reduce the crazy: #92
• A bunch of admin functionality for publishing, rejecting and tweeting new ideas: #83