Standardize capitalizaton (Pango not PANGO) in navbar and 2 pages

Searched for the string ‘PANGO’ in all files
with grep.
Left resources/pangolin/output.html unchanged,
based on convention
(PANGO-1.2, PLEARN-1.2, PUSHER-1.2).

_includes/navbar.html

@@ -4,7 +4,7 @@
   </li>
   <li class="nav-item dropdown">
     <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
-      PANGO
+      Pango
     </a>
     <div class="dropdown-menu" aria-labelledby="navbarDropdown">
       <a class="dropdown-item" href="{{'/index.html#about' | absolute_url}}">About</a>
@@ -49,7 +49,7 @@
         <ul>
             <li><a class="nested-nav-item" href="{{ 'index.html' | absolute_url }}">Home</a></li>
             <li>
-               <div class="nested-nav-item">PANGO</div>
+               <div class="nested-nav-item">Pango</div>
                 <ul>
                     <li><a class="nested-nav-item" href="{{'/index.html#about' | absolute_url}}">About</a></li>
                     <li><a class="nested-nav-item" href="{{'/FAQ.html' | absolute_url}}">FAQs</a></li>

lineage_list.html

@@ -18,7 +18,7 @@
 
   <header class="main">
 		<h1>{{ page.title }}</h1>
-                <p>This is a list of active lineages which have been seen in the last year. A complete list of lineages can be found on <a href="https://github.com/cov-lineages/pango-designation">the PANGO designation GitHub</a> and a JSON file containing the equivalent data from this page for the full set of lineages can be downloaded in JSON format <a href="https://github.com/cov-lineages/lineages-website/blob/master/_data/lineage_data.full.json">here</a>.</p>    
+                <p>This is a list of active lineages which have been seen in the last year. A complete list of lineages can be found on <a href="https://github.com/cov-lineages/pango-designation">the Pango designation GitHub</a> and a JSON file containing the equivalent data from this page for the full set of lineages can be downloaded in JSON format <a href="https://github.com/cov-lineages/lineages-website/blob/master/_data/lineage_data.full.json">here</a>.</p>    
 
 
 	</header>

resources/civet/map_options.html

@@ -40,9 +40,9 @@ <h2>Mapping queries (report option 6)</h2>
 <h2>Mapping background diversity (report option 7)</h2>
 
 
-<p>This option summarises the PANGO lineages as radial charts during a set time period at a specific geographical level. Only lineages that make up more than 5% of the overall sequence count are shown, with others shown under “other”.</p>
+<p>This option summarises the Pango lineages as radial charts during a set time period at a specific geographical level. Only lineages that make up more than 5% of the overall sequence count are shown, with others shown under “other”.</p>
 
-<p>For more information on PANGO lineages, see https://www.pango.network/</p>
+<p>For more information on Pango lineages, see https://www.pango.network/</p>
 
 <p>
 <strong>Arguments:</strong><br>
@@ -55,7 +55,7 @@ <h2>Mapping background diversity (report option 7)</h2>
 
 <strong>Default</strong><br>: 2019-11-01 to present day<br>
 -bmcol/--background-map-column<br>
-column in the background dataset containing geographical information to summarise PANGO lineages by. Must correspond to locations in the centroid file and background map file. <br>
+column in the background dataset containing geographical information to summarise Pango lineages by. Must correspond to locations in the centroid file and background map file. <br>
 
 <strong>Default</strong><br>: --location-column (country by default)<br>