[Backport 4.0] Use version 4 in the documentation

docs/src/main/resources/templates/_main.html

@@ -5,7 +5,7 @@
 
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 
-    <title>MapFish Print 3 Documentation - {{pageTitle}}</title>
+    <title>MapFish Print 4 Documentation - {{pageTitle}}</title>
 
     <link rel="stylesheet" href="css/sphinx_rtd_theme.css" type="text/css" />
     <link rel="stylesheet" href="css/readthedocs-doc-embed.css" type="text/css" />
@@ -17,7 +17,7 @@
       <nav data-toggle="wy-nav-shift" class="wy-nav-side">
         <div class="wy-side-scroll">
           <div class="wy-side-nav-search">
-            <a href="index.html" class="icon icon-home"> MapFish Print 3</a>
+            <a href="index.html" class="icon icon-home"> MapFish Print 4</a>
           </div>
 
           <div
@@ -109,7 +109,7 @@
       <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
         <nav class="wy-nav-top" role="navigation" aria-label="top navigation">
           <i data-toggle="wy-nav-top" class="fa fa-bars"></i>
-          <a href="index.html">MapFish Print 3</a>
+          <a href="index.html">MapFish Print 4</a>
         </nav>
 
         <div class="wy-nav-content">

docs/src/main/resources/templates/index.html

@@ -11,7 +11,7 @@
 <div class="admonition note examples">
   <p class="first admonition-title">Getting started</p>
   <p class="last">
-    A good way to get started with MapFish Print 3 is to follow the <strong>introduction workshop</strong>.
+    A good way to get started with MapFish Print 4 is to follow the <strong>introduction workshop</strong>.
     Download the workshop
     <a target="_blank" href="https://mapfish.github.io/mapfish-print-workshop/mfp-workshop.zip" rel="noopener"
       >here</a
@@ -41,7 +41,7 @@
 <h2>Design Philosophy</h2>
 <p>The (much simplified) architecture of Mapfish Print is as follows:</p>
 
-<img class="architecture" src="images/Mapfish_Print_V3_Architecture.svg" />
+<img class="architecture" src="images/Mapfish_Print_V4_Architecture.svg" />
 
 <p>
   This diagram illustrates how a client (web-client or Java application) communicates with the Mapfish Print

jMeter/Readme.md

@@ -4,9 +4,9 @@ You'll need:
 
 - [jMeter](http://jmeter.apache.org/download_jmeter.cgi)
 - Tomcat
-- A MapFish Print 3 WAR (for example build one with `./gradlew war`)
+- A MapFish Print 4 WAR (for example build one with `./gradlew war`)
 
-Deploy the WAR and check that MapFish Print 3 works correctly. Then start jMeter and open
+Deploy the WAR and check that MapFish Print 4 works correctly. Then start jMeter and open
 the file `jmeter-test-plan.jmx`. Make sure that the configuration in `MapFish Print Server Config`
 matches your setup. There are several test cases available to run. The most complete is
 `Create and Get Report`.