feat(frontend): pad member page back button, add link to member page on edit page

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

@@ -30,7 +30,7 @@
       <br /><a href="/edit/member/{data.id}">Edit profile</a>
     </Alert>
   {/if}
-  <div>
+  <div class="m-3">
     <Button color="secondary" href="/@{data.user.name}">
       <Icon name="arrow-left" /> Back to {data.user.display_name ?? data.user.name}
     </Button>

frontend/src/routes/edit/member/[id]/+page.svelte

@@ -17,6 +17,7 @@
     Button,
     ButtonGroup,
     FormGroup,
+    Icon,
     Input,
     Modal,
     ModalBody,
@@ -258,6 +259,12 @@
 <h1>
   Edit member profile
   <ButtonGroup>
+    <IconButton
+      color="secondary"
+      icon="chevron-left"
+      href="/@{data.member.user.name}/{data.member.name}"
+      tooltip="Back to member"
+    />
     {#if modified}
       <Button color="success" on:click={() => updateMember()}>Save changes</Button>
     {/if}