Updated mediawiki/extensions
Project: mediawiki/extensions/SemanticForms  253fdbffa9ec63fb2d65af491944be7b94ea1546

Restructured (and somewhat improved) template creation

This involved moving the creation code from SFTemplateField into a new
class, SFTemplate.

Change-Id: I6e3bc492daca1ffe43f0a5d6af8edab848a4741f