Move Bitmessage to peer-to-peer RTC. Move I2P-Bote to Self contained networks. Remove "email alternatives" page. (#1559)

- Move I2P-Bote to Self contained networks.
- Remove "email alternatives" page and nav item

pages/software.html

@@ -11,7 +11,6 @@ description: "Discover a variety of open-source software built to protect your p
   <ul class="list-group list-group-flush">
     <li class="list-group-item"><a href="/software/calendar-contacts/"><span class="fas fa-calendar fa-fw"></span> Calendar/Contacts Sync Tools</a></li>
     <li class="list-group-item"><a href="/software/notebooks/"><span class="far fa-sticky-note fa-fw"></span> Digital Notebook</a></li>
-    <li class="list-group-item"><a href="/software/email/#messaging"><span class="fas fa-random fa-fw"></span> Email Alternatives</a></li>
     <li class="list-group-item"><a href="/software/email/"><span class="fas fa-envelope fa-fw"></span> Email Clients</a></li>
     <li class="list-group-item"><a href="/software/encryption-tools/"><span class="fas fa-lock fa-fw"></span> File Encryption</a></li>
     <li class="list-group-item"><a href="/software/file-sharing/"><span class="fas fa-file-export fa-fw"></span> File Sharing</a></li>