BlackBerry project template updates

* Updated .cproject to use workspace_loc to enable copying the template out of the cocos2d-x tree.
* Updated bar-descriptor.xml to be more modern. Tested with Tablet OS 2.1.0 and BlackBerry 10 (10.1 and 10.2) SDKs.
* Removed now-unneeded empty file.

Note that this commit will likely cause projects to not work with the Tablet OS 2.0.0 tooling, and will almost certainly not work with the now-obsolete 1.0 tooling. Considering that 2.1.0 released in April 2012, there should be no reasons to use a downlevel SDK. These changes improve compatibility with future SDK releases by removing the deprecated ```<action>``` tags and replacing them with ```<permission>``` tags.