Added sidebar box containing info for encrypted communication

Signed-off-by: Jim Martens <github@2martens.de>

_config.yml

@@ -21,14 +21,14 @@ defaults:
     values:
       layout: "post"
       author: "Jim Martens"
-      sidebarboxes: "author"
+      sidebarboxes: "author encrypted-communication"
   -
       scope:
         path: ""
         type: "pages"
       values:
         layout: "page"
-        sidebarboxes: "author"
+        sidebarboxes: "author encrypted-communication"
 
 
 # Build settings

_data/author.yml

@@ -13,6 +13,8 @@ politics_topic: politik
 snowden_topic: snowden-refugees
 github_username: 2martens
 twitter_username: 2martens
+fingerprint_gpg: F0F1 53B6 5BAD 4672 01D7 544E 4739 3ABD 1F96 B7C8
+publickey_gpg: /assets/gpg/0x1F96B7C8-pub.asc
 publications:
   - link: /assets/pdf/bachelor-thesis.pdf
     title: Face Detection and Head Tracking for perspective rendering (Bachelor Thesis)

_includes/sidebar/encrypted-communication.html

@@ -0,0 +1,12 @@
+<div class="card sidebar mb-3">
+    <div class="card-body">
+        <p class="card-text">
+            <a class="btn btn-primary" href="{{ site.data.author.publickey_gpg | relative_url }}">
+                <span class="far fa-key"></span>&nbsp;Download public key
+            </a><br>
+            Fingerprint of my GPG key:<br>
+            <code>{{ site.data.author.fingerprint_gpg }}</code>
+        </p>
+
+    </div>
+</div>

cs/index.html

@@ -2,7 +2,6 @@
 layout: category
 title: Computer Science
 category: cs
-sidebarboxes: author
 ---
 
 <h1>Computer Science</h1>

pages/cv.html

@@ -1,7 +1,7 @@
 ---
 title: Curriculum Vitae
 permalink: /cv/
-sidebarboxes: cv-pdf job_offers
+sidebarboxes: cv-pdf job_offers encrypted-communication
 ---
 
 {% if site.data.author.image %}

pages/snowden-refugees.html

@@ -1,7 +1,7 @@
 ---
 title: Snowden Refugees
 permalink: /snowden-refugees/
-sidebarboxes: snowden-refugees
+sidebarboxes: snowden-refugees encrypted-communication
 ---
 
 <p>

politics/g20/index.html

@@ -2,7 +2,7 @@
 layout: category
 title: G20
 category: G20
-sidebarboxes: author politics_qanda
+sidebarboxes: author politics_qanda encrypted-communication
 parent_link: /politics/
 ---
 

politics/index.html

@@ -2,7 +2,7 @@
 layout: category
 title: Politics
 category: politics
-sidebarboxes: author politics_qanda
+sidebarboxes: author politics_qanda encrypted-communication
 ---
 
 <h1>Politics</h1>

speeches/index.html

@@ -2,7 +2,6 @@
 layout: category
 title: Speeches
 category: speeches
-sidebarboxes: author
 ---
 
 <h1>Speeches</h1>