(master): Update popover namespace

Author: Joe Crick

index.html

@@ -643,7 +643,7 @@ <h2 class="content-subhead">Popover</h2>
 
                     <h3>Toggleable</h3>
 
-                    <div class="popover-container">
+                    <div class="pcssc-popover">
                         <label class="pure-button popover-toggle-label" for="popover-one">Bottom Popover</label>
                         <input class="popover-toggle pcssc-invisible" type="checkbox" name="popover-toggle"
                                id="popover-one"/>
@@ -658,7 +658,7 @@ <h3 class="popover-title">Popover bottom</h3>
 
                     <div style="background: #ffffff; overflow:auto;width:auto;border:solid gray;margin-top: 50px;border-width:.1em .1em .1em .8em;padding:.2em .6em;"><pre
                             style="margin: 0; line-height: 125%">
-&lt;div class=<span style="color: #a31515">&quot;popover-container&quot;</span>&gt;
+&lt;div class=<span style="color: #a31515">&quot;pcssc-popover&quot;</span>&gt;
     &lt;label class=<span style="color: #a31515">&quot;pure-button popover-toggle-label&quot;</span> <span
                             style="color: #0000ff">for</span>=<span
                             style="color: #a31515">&quot;popover-one&quot;</span>&gt;Bottom Popover&lt;/label&gt;
@@ -679,7 +679,7 @@ <h3 class="popover-title">Popover bottom</h3>
 
                     <h3>Dismissable</h3>
 
-                    <div class="popover-container">
+                    <div class="pcssc-popover">
                         <div tabindex="0"
                              class="pure-button popover-toggle popover-toggle-dismissable popover-dismissable-right">
                             Dismissable Right Popover
@@ -695,7 +695,7 @@ <h3 class="popover-title">Popover Right</h3>
 
                     <div style="background: #ffffff; overflow:auto;width:auto;border:solid gray;margin-top: 50px;border-width:.1em .1em .1em .8em;padding:.2em .6em;"><pre
                             style="margin: 0; line-height: 125%">
-&lt;div class=<span style="color: #a31515">&quot;popover-container&quot;</span>&gt;
+&lt;div class=<span style="color: #a31515">&quot;pcssc-popover&quot;</span>&gt;
     &lt;div tabindex=<span style="color: #a31515">&quot;0&quot;</span> class=<span style="color: #a31515">&quot;pure-button popover-toggle popover-toggle-dismissable popover-dismissable-right&quot;</span>&gt;
         Dismissable Right Popover
     &lt;/div&gt;

main.css

@@ -2,7 +2,7 @@
 @import '../lib/close-button';
 @import '../lib/variables';
 
-.popover-container {
+.pcssc-popover {
 
   display: inline-block;