Data Entry Overhaul

- Switch inputting how tags are changed from radio buttons to text boxes to simplify database columns.
- Hide artist/album header and notes if none are available.

![malid3_add_overhaul](https://cloud.githubusercontent.com/assets/6787907/3452244/130645e8-01ae-11e4-823f-2621c7742754.png)

![malid3_add_overhaul2](https://cloud.githubusercontent.com/assets/6787907/3452243/1305fd22-01ae-11e4-9284-ed279f040bae.png)