feat(frontend): appease pagespeed insights

frontend/src/routes/+page.svelte

@@ -6,8 +6,9 @@
 
 <svelte:head>
   <title>pronouns.cc</title>
+  <meta property="description" content="Create and share your preferred names and pronouns!" />
   <meta property="og:title" content="pronouns.cc" />
-  <meta property="og:description" content="Name and pronoun cards!" />
+  <meta property="og:description" content="Create and share your preferred names and pronouns!" />
   <meta property="og:url" content={PUBLIC_BASE_URL} />
 </svelte:head>
 

frontend/src/routes/@[username]/+page.svelte

@@ -111,7 +111,7 @@
         {#if data.display_name}
           <div>
             <h2>{data.display_name}</h2>
-            <h5 class="text-body-secondary">@{data.name}</h5>
+            <p class="fs-5 text-body-secondary">@{data.name}</p>
           </div>
         {:else}
           <h2>@{data.name}</h2>

frontend/src/routes/@[username]/ProfileLink.svelte

@@ -20,7 +20,7 @@
   };
 </script>
 
-<Icon name="globe" aria-label="Link" />
+<Icon name="globe" aria-hidden />
 {#if isLink}
   <a href={link} rel="me nofollow noreferrer" target="_blank">{displayLink}</a>
 {:else}

frontend/src/routes/@[username]/[memberName]/+page.svelte

@@ -49,7 +49,7 @@
       </div>
       <div class="col-md">
         <h2>{data.display_name ?? data.name}</h2>
-        <h5 class="text-body-secondary">{data.name} (@{data.user.name})</h5>
+        <p class="fs-5 text-body-secondary">{data.name} (@{data.user.name})</p>
         {#if profileEmpty && $userStore?.id === data.user.id}
           <hr />
           <p>

frontend/src/routes/nav/Navigation.svelte

@@ -113,8 +113,8 @@
   expand="lg"
   class="mb-4"
 >
-  <NavbarBrand href="/"><Logo /></NavbarBrand>
-  <NavbarToggler on:click={toggleMenu} />
+  <NavbarBrand href="/" aria-label="pronouns.cc landing page"><Logo /></NavbarBrand>
+  <NavbarToggler on:click={toggleMenu} aria-label="Toggle menu" />
   <Collapse isOpen={showMenu} navbar expand="lg">
     <Nav class="ms-auto" navbar>
       {#if currentUser}