Overhaul and revamp IM page (#192)

Co-Authored-By: Tommy <contact@tommytran.io>
Co-Authored-By: Daniel Gray <dng@disroot.org>

_data/software/messengers/4_session.yml

@@ -0,0 +1,34 @@
+title: Session
+type: Recommendation
+logo: /assets/img/messengers/session.svg
+labels: 'color==info::icon==fas fa-fw fa-wifi::text==Anonymous Routing::tooltip==Senders and recipients are hidden in the network, no one can know they communicate together.'
+description: |
+  <strong>Session</strong> is an encrypted instant messenger that uses three random  <a href="https://getsession.org/blog/onion-requests-session-new-message-routing-solution"> service nodes</a> to route messages anonymously on the <a href="https://oxen.io">Oxen Network</a>.
+
+  Session allows for E2EE in one-to-one or closed rooms that allow up to 100 members.
+
+  Open rooms have no restriction on the number of members, but anyone can join.
+
+  <h4>Notes</h4>
+  Session does <a href="https://getsession.org/blog/session-protocol-technical-information">not</a> support forward secrecy. The key pair for each conversation is not rotated.
+
+  <h4>Technical information</h4>
+  Session was independently <a href="https://getsession.org/session-code-audit/">audited</a> in 2020. The protocol is described in a <a href="https://arxiv.org/abs/2002.04609">whitepaper</a>.
+
+website: 'https://getsession.org/'
+privacy_policy: 'https://getsession.org/privacy-policy'
+downloads:
+  - icon: fab fa-windows
+    url: 'https://getsession.org/windows'
+  - icon: fab fa-apple
+    url: 'https://getsession.org/mac'
+  - icon: fab fa-linux
+    url: 'https://www.getsession.org/linux'
+  - icon: fab fa-android
+    url: 'https://fdroid.getsession.org/'
+  - icon: fab fa-google-play
+    url: 'https://play.google.com/store/apps/details?id=network.loki.messenger'
+  - icon: fab fa-app-store-ios
+    url: 'https://apps.apple.com/app/id1470168868'
+  - icon: fab fa-github
+    url: 'https://github.com/oxen-io/session-desktop'