Implement ve.ui.MWTemplateDialog

Objective:

* Add button to launch template dialog
* Add template dialog

Changes;

*.php
* Add messages and links to files

ve.ce.Node.css
* Make inline templates display as inline-block to contain their
  contents (allowing shields to work properly)

ve.ui.MWTemplateDialog.js
* New empty dialog for templates

ve.ui.MWTemplateButtonTool.js
* New template button, appears in context and launches dialog

Change-Id: I9174ed7c9012522246a6defc859276bf36763f5b
Merge "Implement ve.ui.MWTemplateDialog"