[FLINK-6952, FLINK-6985] [docs] Fix Javadocs links

This is a follow up to e7c887c0 and 02877580. For snapshot versions
we need to differntiate between title version and javadocs version.

In addition, this removes an unneded config variable and updates
the release scripts.

docs/_config.yml

@@ -30,8 +30,8 @@
 version: "1.4-SNAPSHOT"
 # For stable releases, leave the bugfix version out (e.g. 1.2). For snapshot
 # release this should be the same as the regular version
-version_short: "1.4-SNAPSHOT"
-is_snapshot_version: true
+version_title: "1.4-SNAPSHOT"
+version_javadocs: "1.4"
 
 # This suffix is appended to the Scala-dependent Maven artifact names
 scala_version_suffix: "_2.10"

docs/_includes/sidenav.html

@@ -72,7 +72,7 @@ level is determined by 'nav-pos'.
 {% assign pos = 0 %}
 
 <div class="sidenav-logo">
-  <p><a href="{{ site.baseurl }}"><img class="bottom" alt="Apache Flink" src="{{ site.baseurl }}/page/img/navbar-brand-logo.jpg"></a> v{{ site.version_short }}</p>
+  <p><a href="{{ site.baseurl }}"><img class="bottom" alt="Apache Flink" src="{{ site.baseurl }}/page/img/navbar-brand-logo.jpg"></a> v{{ site.version_title }}</p>
 </div>
 <ul id="sidenav">
 {% for i in (1..10000) %}
@@ -126,7 +126,7 @@ level is determined by 'nav-pos'.
   {% endif %}
 {% endfor %}
   <li class="divider"></li>
-  <li><a href="https://ci.apache.org/projects/flink/flink-docs-release-{{site.version_short}}/api/java"><i class="fa fa-external-link title" aria-hidden="true"></i> Javadocs</a></li>
+  <li><a href="https://ci.apache.org/projects/flink/flink-docs-release-{{site.version_javadocs}}/api/java"><i class="fa fa-external-link title" aria-hidden="true"></i> Javadocs</a></li>
   <li><a href="http://flink.apache.org"><i class="fa fa-external-link title" aria-hidden="true"></i> Project Page</a></li>
 </ul>
 

docs/_layouts/base.html

@@ -23,7 +23,7 @@ under the License.
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
-    <title>Apache Flink {{ site.version_short }} Documentation: {{ page.title }}</title>
+    <title>Apache Flink {{ site.version_title }} Documentation: {{ page.title }}</title>
     <link rel="shortcut icon" href="{{ site.baseurl }}/page/favicon.ico" type="image/x-icon">
     <link rel="icon" href="{{ site.baseurl }}/page/favicon.ico" type="image/x-icon">
 

docs/index.md

@@ -25,7 +25,7 @@ under the License.
 
 
 
-This documentation is for Apache Flink version {{ site.version_short }}. These pages have been built at: {% build_time %}.
+This documentation is for Apache Flink version {{ site.version_title }}. These pages have been built at: {% build_time %}.
 
 Apache Flink is an open source platform for distributed stream and batch data processing. Flink’s core is a streaming dataflow engine that provides data distribution, communication, and fault tolerance for distributed computations over data streams. Flink also builds batch processing on top of the streaming engine, overlaying native iteration support, managed memory, and program optimization.
 

tools/create_release_files.sh

@@ -181,7 +181,11 @@ make_source_release() {
   #change version of documentation
   cd docs
   perl -pi -e "s#^version: .*#version: ${NEW_VERSION}#" _config.yml
-  perl -pi -e "s#^version_short: .*#version_short: ${NEW_VERSION}#" _config.yml
+
+  # The version in the title should not contain the bugfix version (e.g. 1.3)
+  VERSION_TITLE=$(echo $NEW_VERSION | sed 's/\.[^.]*$//')
+  perl -pi -e "s#^version_title: .*#version_title: ${VERSION_TITLE}#" _config.yml
+  perl -pi -e "s#^version_javadocs: .*#version_javadocs: ${VERSION_TITLE}#" _config.yml
   cd ..
 
   # local dist have no need to commit to remote