Merge branch 'staging' - Minor correction for 2.53.3 beta 1 release notes and a few spelling errors corrected. r=IanN

src/news.en.xml

@@ -25,7 +25,7 @@ to <a href="dev/get-involved">get involved</a> in discussing and reporting
 problems as well as further improving the product.
 </p>
 <p>
-SeaMonkey 2.53.3 Beta 1 is available in 22 languages, for Windows, MacOS x64
+SeaMonkey 2.53.3 Beta 1 is available in 22 languages, for Windows, macOS x64
 and Linux.
 </p>]]>
     </content>
@@ -44,7 +44,7 @@ profile and thoroughly read and follow the
 <a href="releases/seamonkey2.53.2/">Release Notes</a></strong></font>.
 </p>
 <p>
-SeaMonkey 2.53.2 is available in 22 languages, for Windows, MacOS x64 and Linux.
+SeaMonkey 2.53.2 is available in 22 languages, for Windows, macOS x64 and Linux.
 </p>
 <p>
 <b>Automatic upgrades from previous versions are disabled for this release. If
@@ -85,7 +85,7 @@ to <a href="dev/get-involved">get involved</a> in discussing and reporting
 problems as well as further improving the product.
 </p>
 <p>
-SeaMonkey 2.53.2 Beta 1 is available in 22 languages, for Windows, MacOS x64
+SeaMonkey 2.53.2 Beta 1 is available in 22 languages, for Windows, macOS x64
 and Linux.
 </p>]]>
     </content>
@@ -104,7 +104,7 @@ profile and thoroughly read and follow the
 <a href="releases/seamonkey2.53.1/">Release Notes</a></strong></font>.
 </p>
 <p>
-SeaMonkey 2.53.1 is available in 20 languages, for Windows, MacOS x64 and Linux.
+SeaMonkey 2.53.1 is available in 20 languages, for Windows, macOS x64 and Linux.
 </p>
 <p>
 <b>Automatic upgrades from previous versions are, for most configurations,
@@ -214,7 +214,7 @@ those same developments in web technologies such as HTML5, hardware
 acceleration and improved JavaScript speed.
 </p>
 <p>
-SeaMonkey 2.49.5 is available in 20 languages, for Windows, MacOS x64 and Linux.
+SeaMonkey 2.49.5 is available in 20 languages, for Windows, macOS x64 and Linux.
 </p>
 <p>
 <font size="+1" color="#ff0000"><b>Automatic upgrades from previous versions
@@ -227,8 +227,8 @@ version.</b></font><br>
 This release adds officially supported Windows x64 and Linux x64 versions. If
 you want to install the Windows x64 version please download the full installer
 and uninstall the old x86 release first. Your profile data will be kept during
-an uninstall. Support for the macOS x86 unified binary is dropped because of
-using a more current macOS development environment.
+an uninstall. Support for the macOS x86 unified binary was dropped because we
+are now using a more current macOS development environment.
 </p>
 <p>
 For a more complete list of major changes in SeaMonkey 2.49.5, see the

src/releases/seamonkey2.53.1/index.en.html

@@ -48,7 +48,7 @@ successful upgrade, don't forget to manually remove the files key3.db and cert8.
 in your profile afterwards, as they include credentials and passwords no longer
 protected by a master password. You can find the path to your profile folder
 entering the special <b>about:support</b> URL in a SeaMonkey browser window.
-<br>You can remove you master password by providing an empty password in the
+<br>You can remove your master password by providing an empty password in the
 "Change Master Password" dialog. <b>Do not use the "Reset Password" function.
 You will lose all stored passwords this way.</b>
 </p>

src/releases/seamonkey2.53.2/index.en.html

@@ -49,7 +49,7 @@ successful upgrade, don't forget to manually remove the files key3.db and cert8.
 in your profile afterwards, as they include credentials and passwords no longer
 protected by a master password. You can find the path to your profile folder
 entering the special <b>about:support</b> URL in a SeaMonkey browser window.
-<br>You can remove you master password by providing an empty password in the
+<br>You can remove your master password by providing an empty password in the
 "Change Master Password" dialog. <b>Do not use the "Reset Password" function.
 You will lose all stored passwords this way.</b>
 </p>

src/releases/seamonkey2.53.3/index.en.html

@@ -49,12 +49,12 @@ successful upgrade, don't forget to manually remove the files key3.db and cert8.
 in your profile afterwards, as they include credentials and passwords no longer
 protected by a master password. You can find the path to your profile folder
 entering the special <b>about:support</b> URL in a SeaMonkey browser window.
-<br>You can remove you master password by providing an empty password in the
+<br>You can remove your master password by providing an empty password in the
 "Change Master Password" dialog. <b>Do not use the "Reset Password" function.
 You will lose all stored passwords this way.</b>
 <br>
 <b>If you have a SeaMonkey 2.53.1 or 2.53.2 language pack installed you need to
-disable it before upgrading to this version.</b> These language pack versions
+remove it before upgrading to this version.</b> These language pack versions
 were marked to be compatible with all Seamonkey 2.53.x releases and cause
 breakage when used with a different version. You can then install one of the
 provided 2.53.3 language packs from the download section after installation of
@@ -409,11 +409,6 @@ Please read this before reporting any new bugs.
   <li>If you try to start SeaMonkey using a locked profile, it will crash (see <a
     href="https://bugzilla.mozilla.org/show_bug.cgi?id=573369">bug 573369</a>).
   </li>
-  <li>The modern theme is missing sort arrows in column headings (see <a
-    href="https://bugzilla.mozilla.org/show_bug.cgi?id=1619149">bug 1619149</a>)
-    and the popup notification is missing some styling (see <a
-    href="https://bugzilla.mozilla.org/show_bug.cgi?id=1619354">bug 1619354</a>).
-  </li>
   <li>Windows:
     <ul>
       <li>Antivirus scanners may report that some parts of SeaMonkey (e.g. the