message: Add spacing and fix verbage on the homepage
diff: <div uk-grid>
  <div class="uk-width-1-1 uk-animation-slide-left-small">
  <div uk-grid class="uk-text-center" style="margin-bottom: 90px;">
  - <div class="uk-width-1-1">
  + <div class="uk-width-1-1" style="margin-top: 45px;">
  <h2>Welcome to NanoVault!</h2>
  <span class="uk-text-lead">The "no strings attached" open source wallet for <a href="https://nano.org" class="uk-link-text" target="_blank">Nano</a></span><br>
  </div>
  <dl class="uk-description-list">
  <dt>Security Focused</dt>
  - <dd>All sensitive operations happen in your browser only - your seed and private keys are never sent across your network, or stored on any server in any format.</dd>
  + <dd>All sensitive operations happen in your browser only - your seed and private keys are never sent across your network, or stored on any server in any format. (So there is no need for server-based authentication measures such as 2FA)</dd>
  <dt>"No Strings Attached" Wallet</dt>
  <dd>Because no information is ever stored on a server, there is no account to login to or email address required. Create as many wallets as you want and switch between them easily.</dd>
  - <dt>Any Device</dt>
  + <dt>Any Device, Anywhere</dt>
  <dd>Send and receive Nano from any device using the web wallet, or <a href="https://github.com/cronoh/nanovault/releases" target="_blank">download the desktop wallet</a> available for Windows/Mac/Linux.</dd>
  <dt>Helpful Features</dt>
  - <dd>Store labels for your accounts in the address book, track your balances in your local currency, and more!</dd>
  + <dd>Store labels for your friends and your own accounts in the address book, track your balances in your local currency, and more!</dd>
  </dl>
  </div>
  </li>
  