Template parameter adding

Objective:

* Allow browsing, searching and adding documented parameters

Changes:

ve.ui.MWTransclusionDialog.js
* Replace regular text input with ve.ui.ParameterSearchWidget
* Fix uses of $(), this.frame.$$ is correct

ve.ui.Dialog.css
* Change rules for addParameterFieldset to make search widget auto-size vertically

ve.ui.Widget.css
* Add styles for ve.ui.MWParameterResultWidget

ve.ui.MWParameterSearchWidget.js, ve.ui.MWParameterResultWidget.js
* New classes
* Provides a way to search and select parameter for a template
* Displays parameter label, name, aliases and description

*.php
* Links to new files and messages

Change-Id: Ie5dbe8c44ce5d64c4b49b09517fb66cd30dd7304