[Web] Replace country flags, improve flags for last logins, add info about last password change of a user

data/web/css/flags/1x1/kw.svg

@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" id="flag-icon-css-kw" viewBox="0 0 512 512">
+  <defs>
+    <clipPath id="a">
+      <path fill-opacity=".7" d="M0 0h496v496H0z"/>
+    </clipPath>
+  </defs>
+  <g fill-rule="evenodd" stroke-width="1pt" clip-path="url(#a)" transform="scale(1.0321)">
+    <path fill="#fff" d="M0 165.3h992.1v165.4H0z"/>
+    <path fill="#f31830" d="M0 330.7h992.1v165.4H0z"/>
+    <path fill="#00d941" d="M0 0h992.1v165.4H0z"/>
+    <path d="M0 0v496l247.5-165.3.5-165.5L0 0z"/>
+  </g>
+</svg>