Make capitalisation more consistent across the interface

Change-Id: I431326d3ee89bdd054174c55b3257107aa7405ce
diff --git a/visualisation/visualisation.py b/visualisation/visualisation.py
index 34bb389..056b2ca 100644
--- a/visualisation/visualisation.py
+++ b/visualisation/visualisation.py
@@ -145,7 +145,7 @@
             page.append('<p>VLANs: %d</p>' % len(vlans))
             page.append('<ul>')
             for vlan in vlans:
-                page.append('<li><a href="./#vlan%d">VLAN id %d, tag %d<br>(%s)</a>' % (vlan.vlan_id, vlan.vlan_id, vlan.tag, vlan.name))
+                page.append('<li><a href="./#vlan%d">VLAN ID %d, Tag %d<br>(%s)</a>' % (vlan.vlan_id, vlan.vlan_id, vlan.tag, vlan.name))
             page.append('</ul>')
         page.append('<div class="date"><p>Current time: %s</p>' % datetime.datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S UTC"))
         page.append('<p>version %s</p>' % self.server.state.version)
@@ -161,7 +161,7 @@
             for vlan in vlans:
                 this_image = cache.graphics[vlan.vlan_id]
                 page.append('<a name="vlan%d"></a>' % vlan.vlan_id)
-                page.append('<h3>VLAN id %d, tag %d, name %s</h3>' % (vlan.vlan_id, vlan.tag, vlan.name))
+                page.append('<h3>VLAN ID %d, Tag %d, name %s</h3>' % (vlan.vlan_id, vlan.tag, vlan.name))
                 page.append('<p><img src="/images/vlan/%d.png" ' % vlan.vlan_id)
                 page.append('width="%d" height="%d" ' % ( this_image['image']['width'], this_image['image']['height']))
                 page.append('alt="VLAN %d diagram" usemap="#MAPVLAN%d">' % (vlan.vlan_id,vlan.vlan_id))
@@ -176,17 +176,17 @@
                         page.append('<area shape="rect" ')
                         page.append('coords="%d,%d,%d,%d" ' % (ulx,uly,lrx,lry))
                         page.append('  />')
-                        page.append('<span>Port id: %d    Port number: %d<br>' % (port.port_id, port.number))
+                        page.append('<span>Port ID: %d    Port number: %d<br>' % (port.port_id, port.number))
                         if port.is_locked:
                             page.append('Locked<br>')
                         if port.is_trunk:
                             page.append('Trunk')
                             if port.trunk_id != -1:
-                                page.append(' (trunk id %d)' % port.trunk_id)
+                                page.append(' (Trunk ID %d)' % port.trunk_id)
                             page.append('<br>')
                         else:
-                            page.append('Current VLAN id: %d (tag %d)<br>' % (port.current_vlan_id, vlan_tags[port.current_vlan_id]))
-                            page.append('Base VLAN id: %d (tag %d)<br>' % (port.base_vlan_id, vlan_tags[port.base_vlan_id]))
+                            page.append('Current VLAN ID: %d (Tag %d)<br>' % (port.current_vlan_id, vlan_tags[port.current_vlan_id]))
+                            page.append('Base VLAN ID: %d (Tag %d)<br>' % (port.base_vlan_id, vlan_tags[port.base_vlan_id]))
                         page.append('</span>')
                 page.append('</map></p>')
                 page.append('<hr>')
@@ -320,7 +320,7 @@
             vlan_id = int(match.group(1))
         cache = self.server.state.cache
 
-        # Do we have a graphic for this VLAN id?
+        # Do we have a graphic for this VLAN ID?
         if not vlan_id in cache.graphics.keys():
             logging.debug('asked for vlan_id %s', vlan_id)
             logging.debug(cache.graphics.keys())