visualgst: Show the class pragmas in VisualGST class browser

Add Metaclass>>#classPragmas as otherwise Metaclass can not be
viewed in the class browser.

2014-02-06  Gwenael Casaccio  <gwenael.casaccio@gmail.com>

	* kernel/Metaclass.st: Add >>#classPragmas.

2014-02-10  Gwenael Casaccio  <gwenael.casaccio@gmail.com>

	* Source/ClassHeaderSource.st: Display instance side and class side pragmas.