Update dt text case and remove colons from the end of the labels

Closes #346 

### Search results
---
![results-ui](https://cloud.githubusercontent.com/assets/96776/3531729/f2c5a908-07b2-11e4-89bb-b256309df121.png)
![results-markup](https://cloud.githubusercontent.com/assets/96776/3531730/f2c692f0-07b2-11e4-81c4-4a12903e6011.png)

### Masthead
---
![masthead-ui](https://cloud.githubusercontent.com/assets/96776/3531734/fb6a8f60-07b2-11e4-8061-8972c3250132.png)
![masthead-markup](https://cloud.githubusercontent.com/assets/96776/3531735/fb6b9b8a-07b2-11e4-999c-431f3277640d.png)

### Upper metadata section
---
![upper-md-ui](https://cloud.githubusercontent.com/assets/96776/3531739/0381cd3a-07b3-11e4-8d4b-e7b9bc97c2e1.png)
![upper-md-markup](https://cloud.githubusercontent.com/assets/96776/3531740/038216f0-07b3-11e4-8a48-7f6c68567424.png)

### Lower metadata section
---
![lower-md-ui](https://cloud.githubusercontent.com/assets/96776/3531754/22126a20-07b3-11e4-8020-2ce1ad83899a.png)
![lower-md-markup](https://cloud.githubusercontent.com/assets/96776/3531744/0eb9093e-07b3-11e4-802d-70d2701f076f.png)

### Access panel
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![access-panel-ui](https://cloud.githubusercontent.com/assets/96776/3531757/293e3ec8-07b3-11e4-829c-defdf2fb48e1.png)
![access-panel-markup](https://cloud.githubusercontent.com/assets/96776/3531758/293eea6c-07b3-11e4-94d8-957ab378957c.png)