add title to the button and add target blank

Author: Harshit Kedia

src/popup.html

@@ -74,7 +74,7 @@ <h6 class="center">
 				<h5>Note:</h5>
 				<h6>
 					<ul>
-						<li>The PRs fetched are according to the date last reviewed by anyone. So if you reviewed a PR 10 days back, and someone reviewed it 2 days back, it will appear in your last week's activity. See <a href="https://github.com/hkedia321/scrum_helper_extension/issues/20">this issue</a>.
+						<li>The PRs fetched are according to the date last reviewed by anyone. So if you reviewed a PR 10 days back, and someone reviewed it 2 days back, it will appear in your last week's activity. See <a target="_blank" href="https://github.com/hkedia321/scrum_helper_extension/issues/20">this issue</a>.
 						</li>
 						<li>By using the extension you understand that there might be discrepancies in the SCRUM generated. You are advised to edit the SCRUM afterwards to remove any discrepancies.
 						</li>

src/scripts/scrumHelper.js

@@ -352,6 +352,7 @@ if(!refreshButton_Placed){
 			var button=document.createElement("button");
 			button.style="background-image:none;background-color:#3F51B5;";
 			button.setAttribute('class', 'F0XO1GC-n-a F0XO1GC-G-a');
+			button.title='Rewrite your SCRUM using updated settings!';
 			button.id="refreshButton";
 			var elemText = document.createTextNode("↻ Rewrite SCRUM!");
 			button.appendChild(elemText);