Clean up some usability errors

themes/lhs/layouts/partials/footer.html

@@ -3,7 +3,7 @@
         <div class="columns">
 
             <div class="column is-1 is-pull-right-touch is-hidden-mobile">
-                <img src="{{ absURL "images/rose_logo.svg" }}">
+                <img src="{{ absURL "images/rose_logo.svg" }}" alt="The logo of Leigh Hackspace">
             </div> 
 
             <div class="column is-4">

themes/lhs/layouts/partials/header.html

@@ -1,9 +1,9 @@
 <nav class="navbar is-spaced" role="navigation" aria-label="main navigation">
     <div class="container">
 
-        <div class="navbar-brand" style="flex-grow: 1;">
+        <div class="navbar-brand">
             <a class="navbar-item" href="{{ absURL "" }}">
-                <img class="site-logo" src="{{ absURL "images/rose_logo.svg" }}" alt="" width="70">
+                <img class="site-logo" src="{{ absURL "images/rose_logo.svg" }}" alt="The logo of Leigh Hackspace" width="70">
                 <span class="site-logo-text">Leigh<br/>Hackspace</span>
             </a>
             <a role="button" class="navbar-burger" aria-label="menu" aria-expanded="false" data-target="navbar">

themes/lhs/static/site.webmanifest

@@ -1,6 +1,6 @@
 {
-    "name": "Leig Hackspace",
+    "name": "Leigh Hackspace",
-    "short_name": "Leig Hackspace",
+    "short_name": "lhs",
     "icons": [
         {
             "src": "/android-chrome-192x192.png",