Note fixes

Hey,

I've added field.note to the templates of localfile, azurefile, and s3file field types, as they didn't have one. I've noticed this while working with the S3 file filedtype, but I looked trough all of the other ones. I've added some bootstrap class magic so hey look fine.

Another small issue, which I'm not sure woth its own pull request: 
You can add html to the note texts which is fine, but if you have more than one line only the first line is green. By removing the `height: 25px` from the field-note stlye, it looks better in my opinion.

Here are some pics:

New note field before fix
![before](https://cloud.githubusercontent.com/assets/1830626/2730689/5852a3d8-c61e-11e3-997f-8084a8504a85.jpg)

New note field after fix:
![after](https://cloud.githubusercontent.com/assets/1830626/2730690/6bd64e5a-c61e-11e3-82a2-3d61f000de7b.jpg)