Use https links

Author: lauft

index.html

@@ -36,7 +36,7 @@ <h2>Versions</h2>
           It is always a good idea to make sure that you are using the latest release of Taskwarrior and Taskserver, not just because bugs are fixed that may help you, but also because the solutions below are geared toward the current releases.
         </p>
         <p>
-          If you upgrade from an older release of Taskserver, you will need to follow the <a href="http://taskwarrior.org/docs/taskserver/upgrade.html">upgrade instructions</a>.
+          If you upgrade from an older release of Taskserver, you will need to follow the <a href="https://taskwarrior.org/docs/taskserver/upgrade.html">upgrade instructions</a>.
         </p>
       </section>
       <section>
@@ -49,7 +49,7 @@ <h2>'task sync' showed task list</h2>
       <section>
         <h2>Taskwarrior without GnuTLS</h2>
         <p>
-          You are using version <code>2.3.0</code> or later, but the Taskwarrior binary was compiled without <a href="http://www.gnutls.org">GnuTLS</a> support.
+          You are using version <code>2.3.0</code> or later, but the Taskwarrior binary was compiled without <a href="https://www.gnutls.org">GnuTLS</a> support.
         </p>
         <p>
           If you installed Taskwarrior using your OS's package manager, you may be suffering from an out of date package.
@@ -60,7 +60,7 @@ <h2>Taskwarrior without GnuTLS</h2>
         <h2>GnuTLS and recent releases</h2>
         <p>
           Recent releases make GnuTLS support opt-out instead of opt-in, so upgrading to the latest version may help.
-          Otherwise, you will need to build Taskwarrior from the <a href="http://taskwarrior.org/download/task-latest.tar.gz">latest source tarball</a>, following the instructions in the <code>INSTALL</code> file.
+          Otherwise, you will need to build Taskwarrior from the <a href="https://taskwarrior.org/download/task-latest.tar.gz">latest source tarball</a>, following the instructions in the <code>INSTALL</code> file.
           If you are a developer, do that.
           If you are not, then installing a development environment is probably not something
           you want to do, in which case contact your OS's package maintainer.
@@ -188,7 +188,7 @@ <h2>Note on validation dates</h2>
       <section>
         <h2>Note on GnuTLS security</h2>
         <p>
-          As a <a href="http://gnutls.org/security.html">security product</a>, it is imperative that you keep your GnuTLS up to date.
+          As a <a href="https://gnutls.org/security.html">security product</a>, it is imperative that you keep your GnuTLS up to date.
         </p>
         <p>
           As with many security products, GnuTLS is maintained by a responsible and quick-responding team that takes security very seriously.
@@ -433,7 +433,7 @@ <h2>General Reachability</h2>
 
         $ nmap -sP taskd.example.net
 
-        Starting Nmap 6.40 ( http://nmap.org ) at 2016-05-15 11:24 CEST
+        Starting Nmap 6.40 ( https://nmap.org ) at 2016-05-15 11:24 CEST
         Nmap scan report for taskd.example.net (192.168.1.100)
         Host is up (0.00012s latency).
         Nmap done: 1 IP address (1 host up) scanned in 0.01 seconds