Wrap unresponsive tables in table-responsive (#131)

permissions.ejs (6 columns), users.ejs (3 columns incl. an inline
password-change form), and profile.ejs's domain-permissions table had
no .table-responsive wrapper, so on narrow/mobile viewports they'd
either overflow the page horizontally or force zoomed-out, unreadable
text instead of scrolling within the table. hosts.ejs already had the
wrapper — these three didn't.

Verified: EJS compiles, npm test 192/192 pass, and fetched each route
from a running instance to confirm the wrapper is present in the
served HTML.

nodejs/views/profile.ejs

@@ -91,10 +91,12 @@
 				</div>
 
 				<div class="mb-1 profile-label">Domain permissions</div>
+				<div class="table-responsive">
 				<table class="table table-striped">
 					<thead><th>Domain</th><th>Role</th></thead>
 					<tbody id="profile-domains"></tbody>
 				</table>
+				</div>
 			</div>
 		</div>
 	</div>