Clarify the meaning of "Live"

Prefer "installer-less" in contexts where it can't be explained,
i.e. the short blurb on the index.

Fixes #1.

plebian-website/templates/about.html

@@ -14,6 +14,11 @@ <h2>Introduction</h2>
 timely security updates directly from Debian even years in the future.
 </p>
 <p>
+The "Live" part of the name refers to there not being an installer. All you have
+to do to install the image onto your board is to flash it. Your data on it will
+be persistent.
+</p>
+<p>
 We're not a project claiming to support every SBC under the sun, instead we're
 laser-focused on PINE64's offerings and know the boards in-and-out.
 </p>

plebian-website/templates/index.html

@@ -5,9 +5,9 @@ <h1>Plebian &mdash; PINE Live Debian</h1>
     <div class="plebian-box">
         <h2>About</h2>
         <p>
-            Plebian is a set of Debian-based live images for PINE64's Quartz64
-            and SOQuartz line of devices. Plebian aims to be unsurprising, well
-            documented and easy to get started with.
+            Plebian is a set of Debian-based installer-less images for PINE64's
+            Quartz64 and SOQuartz line of devices. Plebian aims to be
+            unsurprising, well documented and easy to get started with.
         </p>
         <p>
             <a class="plebian-box-link" href="/about/">Learn more</a>