Measure two-step delete, with fade-in buttons

#### Story ####
  - https://www.pivotaltracker.com/story/show/62487888

#### Notes ####
  - Replaced measure's delete button with consistent two-step delete button used within patient results and patient data criteria, moved measure settings gear icon into title bar
  - Updated styling to match v5 mockups
  - Added simple CSS3 fading transition for buttons

#### Images ####
![0105closed](https://f.cloud.github.com/assets/456952/2078445/2a8c5c66-8dbe-11e3-9091-cb1cda56988c.png)
![0105settings](https://f.cloud.github.com/assets/456952/2078448/2d0af4a2-8dbe-11e3-8785-f7f4aebfbbf2.png)
![0105expanded](https://f.cloud.github.com/assets/456952/2078451/2f5535c4-8dbe-11e3-8ace-359cb4e042fd.png)
![0387closed](https://f.cloud.github.com/assets/456952/2078452/31ac9c36-8dbe-11e3-887a-4566cc7b0012.png)
![0387settings](https://f.cloud.github.com/assets/456952/2078454/3452b52e-8dbe-11e3-9502-25ce2cb88799.png)
![0387expanded](https://f.cloud.github.com/assets/456952/2078458/36d8eee4-8dbe-11e3-80bc-fc78b516a8e9.png)