Fix minor things on Settings page

Author: dsavenko

src/settings.html

@@ -42,18 +42,21 @@
       </div>
       <div class='row'>
         <label for='githubUserInput'>GitHub account:</label>
+        <input type='text' id='githubUserInput' value=''>
         <div class='hint'>
           GitHub account to look for data. Change at your own risk.
           <a id='resetGithubUserBut' href='#'>Restore default</a>.
         </div>
-        <input type='text' id='githubUserInput' value=''>
       </div>
       <div class='row clearfix'>
         <button id='saveBut' class='to-right'>Save</button>
       </div>
       <div class='row'>
         <label for='refreshBut'>Refresh data:</label>
         <div><button id='refreshBut'>Refresh Data</button></div>
+        <div class='hint'>
+          The plugin periodically reloads available looks from GitHub. This button makes it reload now.
+        </div>
       </div>
       <div class='row'>
         <label for='welcomePageBut'>Welcome page:</label>

src/settings.js

@@ -43,7 +43,7 @@ function dirty() {
     saveBut.innerText = 'Save*'
 }
 
-async function sendMessageOnClick(msg, button) {
+async function sendMessageOnClick(msg, button, successCaption) {
     hideResultDivs()
     const onclick = button.onclick
     button.onclick = undefined
@@ -53,20 +53,21 @@ async function sendMessageOnClick(msg, button) {
     try {
         await browser.runtime.sendMessage(msg)
         addResultNode(button.parentNode)
+        button.innerText = successCaption || caption
     } catch (e) {
         addResultNode(button.parentNode, '' + e)
+        button.innerText = caption
     } finally {
         button.onclick = onclick
         button.style.cursor = 'default'
-        button.innerText = caption
     }
 }
 
 function onSaveClick() {
     const newSettings = {
         githubUser: githubUserInput.value
     }
-    sendMessageOnClick({type: 'set_settings', settings: newSettings}, saveBut)
+    sendMessageOnClick({type: 'set_settings', settings: newSettings}, saveBut, 'Save')
         .catch(e => console.log('Failed to save settings', e))
 }