Update Klipper docs

doc/klipper/index.docbook

@@ -30,8 +30,8 @@
 
 <legalnotice>&FDLNotice;</legalnotice>
 
-<date>2020-04-03</date>
-<releaseinfo>Plasma 5.19</releaseinfo>
+<date>2021-04-17</date>
+<releaseinfo>Plasma 5.20</releaseinfo>
 
 <abstract>
 <para>&klipper; is the &plasma; clipboard cut &amp; paste utility.</para>
@@ -97,7 +97,7 @@ the systemtray.</para>
 
 <para>Hover an entry with the mouse pointer and four icons appear which enable you to 
 invoke an action, show the barcode, edit the content or remove the entry from the history.
-Use &ksnapshot; to capture the barcodes and save them.
+Use &spectacle; to capture the barcodes and save them.
 </para>
 
 <para>You can search through the clipboard history by opening it
@@ -106,39 +106,10 @@ you type. To clear the clipboard history click on the icon at the right of
 the search field.
 </para>
 
-<para>The <guilabel>Configure</guilabel> action in the context menu opens the 
+<para>The <guilabel>Configure Clipboard...</guilabel> action in the context menu opens the 
 <link linkend="preferences">settings dialog</link>.
 </para>
 
-<para>To disable the &klipper; widget, deselect it in the <guilabel>General</guilabel> page 
-of the <guilabel>System Tray Settings</guilabel> (<keycombo 
-action="simul">&Alt;<keycap>D</keycap></keycombo>, <keycap>S</keycap>).</para>
-
-</sect2>
-
-<sect2 id="klipper-application">
-<title>&klipper; Application</title>
-<screenshot>
-<screeninfo>The &klipper; Application.</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="klipper-application.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The &klipper; Application</phrase>
-</textobject>
-</mediaobject>
-</screenshot>
-
-<para>At the top of the available menu actions previous clipboard entries are shown. 
-Selecting one of these copies it to the clipboard, from
-where it can be pasted into any &kde; or X application as usual.</para>
-
-<para>You can search through the clipboard history by typing your query
-in the search field at the top. The results are updated as
-you type.
-</para>
-
 </sect2>
 </sect1>
 
@@ -208,28 +179,13 @@ clipboard buffer is pasted using <keycombo>&Ctrl;<keycap>V</keycap>
 in a context menu.</para>
 </note>
 
-<!-- &klipper; can be used to set the clipboard mode for the whole of &kde;. The
-first mode will be familiar to &Microsoft; &Windows; and &Mac; users: Text is
-inserted into the clipboard using an application's cut/copy (or generally
-<keycombo>&Ctrl;<keycap>X</keycap></keycombo> and
-<keycombo>&Ctrl;<keycap>C</keycap></keycombo> respectively)
-function, and the application's paste (or generally 
-<keycombo>&Ctrl;<keycap>V</keycap></keycombo>) function pastes the
-contents of this clipboard.
-</para>
-<para>
-The second mode will be more familiar to longtime &UNIX; users: Selected text
-is copied to this clipboard, and clicking the <mousebutton>middle</mousebutton> 
-mouse button pastes the
-contents of this clipboard.
--->
 </sect2>
 
 <sect2 id="changing-clipboard-modes">
 <title>Changing Clipboard/Selection Behavior</title>
 <para>
 In order to change clipboard/selection behavior, select
-<guimenuitem>Configure &klipper;...</guimenuitem> from the &klipper; context menu,
+<guimenuitem>Configure Clipboard...</guimenuitem> from the &klipper; context menu,
 and in the dialog box that appears, select the
 <guilabel>General</guilabel> page. Unchecking <guilabel>Synchronize contents of the clipboard and the
 selection</guilabel> makes the clipboard and selection function as completely