search change post to get

Fixes #640

src/_includes/partials/header.njk

@@ -22,7 +22,7 @@
 
 			<section id="wb-srch" class="col-lg-offset-4 col-md-offset-4 col-sm-offset-2 col-xs-12 col-sm-5 col-md-4">
 				<h2>{{ header[locale].search }}</h2>
-				<form action="https://canada.ca/{{ locale }}/sr/srb.html" method="post" name="cse-search-box" role="search">
+				<form action="https://canada.ca/{{ locale }}/sr/srb.html" method="get" name="cse-search-box" role="search">
 					<div class="form-group wb-srch-qry">
 						<label for="wb-srch-q" class="wb-inv">{{ header[locale].searchCanadaCa }}</label>
 						<input id="wb-srch-q" list="wb-srch-q-ac" class="wb-srch-q form-control" name="q" type="search" value="" size="34" maxlength="170" placeholder="{{ header[locale].searchCanadaCa }}"/>