Address a few online link issues

Closes #572 
Closes #734 



##### Google books link in results
![lord-bacon](https://cloud.githubusercontent.com/assets/96776/4016501/aa09c816-2a35-11e4-805d-8dcfbf7690e8.png)

##### SFX link in results
![6269653-result](https://cloud.githubusercontent.com/assets/96776/4016499/aa0384b0-2a35-11e4-917e-3b68efa6d710.png)

##### Online label for images in results
![online-label](https://cloud.githubusercontent.com/assets/96776/4016538/2d8e5788-2a36-11e4-94ca-74a4915a3010.png)

##### PURL link in results for files
![jn060mx0288-file](https://cloud.githubusercontent.com/assets/96776/4016500/aa07296c-2a35-11e4-9244-4ce8d8a3e5a2.png)

##### PURL link in OSD viewer
![vb267mw8946](https://cloud.githubusercontent.com/assets/96776/4016502/aa0ba2da-2a35-11e4-94a7-b6a2514ebcb3.png)