Partial Views and Partial View Macro's should allow for folder hierarchy (U4-5441)

... for organization.  This changes makes them work much like the Scripts and css folders.

I didn't add a Type drop down like the scripts screen has.  This is unnecessary and cumbersome.  Instead it works like other screens and the user can generate a hierarchy in their files by adding /'s in the names.  This is how it works in Stylesheets works and its a lot cleaner.  I added a note of this to the creation dialogs as well.

For example create a view file with the name myFolder/myView and the system will take care of folder creation automatically.  There is also a delete option.

**Other errors fixed**
* Selecting a folder in the scripts lists was generating an error.
* Stylesheets would not create a new folder(but they wold make nested children in existing folders.
* Partial and Macro Views would not use the proper helpers for generating syncTree code.

![screen shot 2014-09-04 at 10 21 02 am](https://cloud.githubusercontent.com/assets/458367/4150562/bd843346-343e-11e4-8cde-d7e6f9c5c988.png)