Merged PR 6046: Playground - additional adjustments

* pngs change to svgs to remove white background
* buttons on hover effect added
* texts updated
* IE & Edge adjustments were made
* hide features on mobile and on report create
* first bookmark is now selected on bookmark showcase
* showcase feature switch removed
* active mode indication added

Author: Amit Shuster

demo/v2-demo/code_area.html

@@ -2,10 +2,10 @@
 <div class="editorTitle">Code</div>
 <div class="textAreaControls">
     <button id="btnRunCode" class="textAreaControl regular">
-        <img src="images\run.png" /> Run
+        <img src="images\run.svg" /> Run
     </button>
     <button id="btnCopyCode" class="textAreaControl regular" onclick="elementClicked(this);CopyCode();">
-        <img src="images\copy.png" /> Copy
+        <img src="images\copy.svg" /> Copy
     </button>
 </div>
 

demo/v2-demo/docs.html

@@ -4,7 +4,7 @@
             <div class="docs-links">
                 <h2>Getting started</h2>
                 <a href="https://github.com/Microsoft/powerbi-javascript/wiki">Power BI JavaScript API wiki</a><br>
-                <a href="https://docs.microsoft.com/en-us/power-bi/developer/embedding">Power BI Embedding Documentation</a><br>
+                <a href="https://docs.microsoft.com/en-us/power-bi/developer/embedding">Power BI embedding documentation</a><br>
             </div>
             <div class="docs-links">
                 <h2>Useful links</h2>