fix usrdoc build

.travis.yml

@@ -11,7 +11,8 @@ addons:
     packages:
     - libmaven-ant-tasks-java
     - postgresql-9.6-postgis-2.3
-
+    - python3
+
 install: true
 
 before_script:

travis/junit-noframes.xsl

@@ -0,0 +1,61 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- based on SO answer http://stackoverflow.com/a/9471505/166062 by dvdvorle http://stackoverflow.com/users/481635/dvdvorle -->
+<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
+  <xsl:output method="text" indent="no"/>
+  <xsl:template match="/testsuite">
+  <xsl:text>Testsuite: </xsl:text><xsl:value-of select="@name" />
+<xsl:text>
+Tests run: </xsl:text>
+    <xsl:value-of select="@tests" />
+    <xsl:text>, Failures: </xsl:text>
+    <xsl:value-of select="@failures" />
+    <xsl:text>, Errors: </xsl:text>
+    <xsl:value-of select="@errors" />
+    <xsl:text>, Time elapsed: </xsl:text>
+    <xsl:value-of select="@time" />
+    <xsl:text> sec</xsl:text>
+    <xsl:text>
+--------- ----------- ---------</xsl:text>
+    <xsl:apply-templates select="testcase" />
+    <xsl:apply-templates select="system-out" />
+    <xsl:apply-templates select="system-err" />
+  </xsl:template>
+
+  <xsl:template match="testcase">
+    <xsl:text>
+Testcase: </xsl:text>
+    <xsl:value-of select="@name" />
+    <xsl:text> took </xsl:text>
+    <xsl:value-of select="@time" />
+    <xsl:choose>
+      <xsl:when test="failure"><xsl:text> FAILURE </xsl:text><xsl:apply-templates select="failure"/></xsl:when>
+      <xsl:when test="error"><xsl:text> ERROR </xsl:text><xsl:apply-templates select="error"/></xsl:when>
+      <xsl:otherwise><xsl:text> SUCCESS</xsl:text></xsl:otherwise>
+    </xsl:choose>    
+  </xsl:template>
+
+  <xsl:template match="error | failure">
+    <xsl:value-of select="@message" />
+    <xsl:if test="@type != @message">
+      <xsl:text> </xsl:text><xsl:value-of select="@type" />
+    </xsl:if>
+    <xsl:text>
+</xsl:text>
+    <xsl:value-of select="." />
+  </xsl:template>
+
+  <xsl:template match="system-out">
+    <xsl:text>
+------ Standard output ------
+</xsl:text>
+    <xsl:value-of select="." />
+  </xsl:template>
+
+  <xsl:template match="system-err">
+    <xsl:text>
+------ Error output ------
+</xsl:text>
+    <xsl:value-of select="." />
+  </xsl:template>
+
+</xsl:stylesheet>