Use https

agents/unifiedmailboxagent/settings.kcfg

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<kcfg xmlns="http://www.kde.org/standards/kcfg/1.0"
-      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-      xsi:schemaLocation="http://www.kde.org/standards/kcfg/1.0
-      http://www.kde.org/standards/kcfg/1.0/kcfg.xsd" >
+<kcfg xmlns="https://www.kde.org/standards/kcfg/1.0"
+      xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance"
+      xsi:schemaLocation="https://www.kde.org/standards/kcfg/1.0
+      https://www.kde.org/standards/kcfg/1.0/kcfg.xsd" >
  <group name="General">
   <entry name="enabled" key="enabled" type="Bool">
    <default>false</default>

src/dbusinterface/org.freedesktop.Akonadi.NewMailNotifier.xml

@@ -1,4 +1,4 @@
-<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN" "http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
+<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN" "https://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
 <node>
   <interface name="org.freedesktop.Akonadi.NewMailNotifier">
     <method name="showConfigureDialog" >

src/editor/custommimeheader/custommimeheader.kcfg

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<kcfg xmlns="http://www.kde.org/standards/kcfg/1.0"
-      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-      xsi:schemaLocation="http://www.kde.org/standards/kcfg/1.0
-      http://www.kde.org/standards/kcfg/1.0/kcfg.xsd" >
+<kcfg xmlns="https://www.kde.org/standards/kcfg/1.0"
+      xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance"
+      xsi:schemaLocation="https://www.kde.org/standards/kcfg/1.0
+      https://www.kde.org/standards/kcfg/1.0/kcfg.xsd" >
   <kcfgfile name="kmail2rc">
     <parameter name="pairId" />
   </kcfgfile>

src/settings/kmail.kcfg.cmake

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<kcfg xmlns="http://www.kde.org/standards/kcfg/1.0"
-      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-      xsi:schemaLocation="http://www.kde.org/standards/kcfg/1.0
-      http://www.kde.org/standards/kcfg/1.0/kcfg.xsd" >
+<kcfg xmlns="https://www.kde.org/standards/kcfg/1.0"
+      xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance"
+      xsi:schemaLocation="https://www.kde.org/standards/kcfg/1.0
+      https://www.kde.org/standards/kcfg/1.0/kcfg.xsd" >
   <include>qtextcodec.h</include>
   <include>QFontDatabase</include>
   <include>kcolorscheme.h</include>

src/ui/miscpagemaintab.ui

@@ -48,7 +48,7 @@
         </sizepolicy>
        </property>
        <property name="whatsThis">
-        <string comment="what's this help">&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.0//EN&quot; &quot;http://www.w3.org/TR/REC-html40/strict.dtd&quot;&gt;
+        <string comment="what's this help">&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.0//EN&quot; &quot;https://www.w3.org/TR/REC-html40/strict.dtd&quot;&gt;
 &lt;html&gt;&lt;head&gt;&lt;meta name=&quot;qrichtext&quot; content=&quot;1&quot; /&gt;&lt;style type=&quot;text/css&quot;&gt;
 p, li { white-space: pre-wrap; }
 &lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:'Sans Serif'; font-size:10pt; font-weight:400; font-style:normal;&quot;&gt;