#6289 Fix extension popup width (#6290)

* #6289 fix extension popup width

* remove unneeded css comment

* popup headers cleanup

* updates

Author: sosnovsky

extension/chrome/popups/default.htm

@@ -1,9 +1,9 @@
+<!doctype html>
 <!-- © 2016-2018 FlowCrypt Limited. Limitations apply. Contact human@flowcrypt.com -->
 
-<html lang="en">
+<html lang="en" class="extension-popup">
   <head>
-    <meta content="text/html;charset=utf-8" http-equiv="Content-Type" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no" />
+    <meta charset="utf-8" />
     <title>FlowCrypt</title>
     <link rel="stylesheet" href="/css/animate.css" />
     <link rel="stylesheet" href="/css/cryptup.css" />

extension/chrome/popups/select_account.htm

@@ -1,9 +1,9 @@
+<!doctype html>
 <!-- © 2016-2018 FlowCrypt Limited. Limitations apply. Contact human@flowcrypt.com -->
 
 <html lang="en">
   <head>
-    <meta content="text/html;charset=utf-8" http-equiv="Content-Type" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no" />
+    <meta charset="utf-8" />
     <title>FlowCrypt</title>
     <link rel="stylesheet" href="/css/animate.css" />
     <link rel="stylesheet" href="/css/open-sans.css" />

extension/css/browser-popup.css

@@ -9,6 +9,10 @@ body {
   padding: 0;
 }
 
+html.extension-popup {
+  width: 364px;
+}
+
 .action_open_settings {
   display: block;
   position: absolute;