Added support for Web fonts

This pull request add support for serving fonts.

 - Set proper headers for loading fonts from different domains
 - Set proper MIME type
 - Set caching headers to 1 month

### Instructions for QA/IT

1. Copy the changes from ``` enabled.kaltura.conf.template ``` and ``` apps.conf.template ``` into the local configuration file i.e ```my_kaltura.conf```
2. Restart Apache

Please review & merge