[423130] set content type priority to low

Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=423130
Change-Id: Ib16a7a68088de56fad6b69d7a5bcda82473f0ddd
Signed-off-by: Florian Thienel <florian@thienel.org>
diff --git a/org.eclipse.vex.dita/plugin.xml b/org.eclipse.vex.dita/plugin.xml
index 93da368..872155d 100644
--- a/org.eclipse.vex.dita/plugin.xml
+++ b/org.eclipse.vex.dita/plugin.xml
@@ -4,20 +4,33 @@
 
 	<!-- Registers DITA-related content types extensions as xml content-->
 	<extension point="org.eclipse.core.contenttype.contentTypes">
-		<content-type id="org.eclipse.vex.ui.dita" name="%contentType.name"
-			base-type="org.eclipse.vex.ui.XmlDocument" file-extensions="dita, ditamap, bookmap, ditaval">
+		<content-type
+        base-type="org.eclipse.vex.ui.XmlDocument"
+        file-extensions="dita,ditamap,bookmap,ditaval"
+        id="org.eclipse.vex.ui.dita"
+        name="%contentType.name"
+        priority="normal">
 		</content-type>
-		<content-type id="org.eclipse.vex.ui.dita.map"
-			name="%contentType.map.name" base-type="org.eclipse.vex.ui.dita.map"
-			file-extensions="ditamap, bookmap">
+		<content-type
+        base-type="org.eclipse.vex.ui.dita.map"
+        file-extensions="ditamap,bookmap"
+        id="org.eclipse.vex.ui.dita.map"
+        name="%contentType.map.name"
+        priority="low">
 		</content-type>
-		<content-type id="org.eclipse.vex.ui.dita.ditaval"
-			name="%contentType.ditaval.name" base-type="org.eclipse.vex.ui.dita.ditaval"
-			file-extensions="ditaval">
+		<content-type
+        base-type="org.eclipse.vex.ui.dita.ditaval"
+        file-extensions="ditaval"
+        id="org.eclipse.vex.ui.dita.ditaval"
+        name="%contentType.ditaval.name"
+        priority="low">
 		</content-type>
-		<content-type id="org.eclipse.vex.ui.dita.topic"
-			name="%contentType.topic.name" base-type="org.eclipse.vex.ui.dita.topic"
-			file-extensions="dita">
+		<content-type
+        base-type="org.eclipse.vex.ui.dita.topic"
+        file-extensions="dita"
+        id="org.eclipse.vex.ui.dita.topic"
+        name="%contentType.topic.name"
+        priority="low">
 		</content-type>
 	</extension>
 
diff --git a/org.eclipse.vex.docbook/plugin.xml b/org.eclipse.vex.docbook/plugin.xml
index 7dae25e..65a9911 100644
--- a/org.eclipse.vex.docbook/plugin.xml
+++ b/org.eclipse.vex.docbook/plugin.xml
@@ -3,8 +3,12 @@
 <plugin>
 
 	<extension point="org.eclipse.core.contenttype.contentTypes">
-		<content-type id="org.eclipse.vex.ui.docbook" name="%contentType.name"
-			base-type="org.eclipse.vex.ui.XmlDocument" file-extensions="xml, docbook">
+		<content-type
+        base-type="org.eclipse.vex.ui.XmlDocument"
+        file-extensions="xml,docbook"
+        id="org.eclipse.vex.ui.docbook"
+        name="%contentType.name"
+        priority="low">
 		</content-type>
 	</extension>
  <extension
diff --git a/org.eclipse.vex.projectplan/plugin.xml b/org.eclipse.vex.projectplan/plugin.xml
index b4206b3..8aa388e 100644
--- a/org.eclipse.vex.projectplan/plugin.xml
+++ b/org.eclipse.vex.projectplan/plugin.xml
@@ -5,10 +5,10 @@
          point="org.eclipse.core.contenttype.contentTypes">

       <content-type

             base-type="org.eclipse.vex.ui.XmlDocument"

-            file-extensions="xml, projectplan"

+            file-extensions="xml,projectplan"

             id="org.eclipse.vex.projectplan"

             name="%contentType.name"

-            priority="normal">

+            priority="low">

       </content-type>

    </extension>

    <extension

diff --git a/org.eclipse.vex.ui/plugin.xml b/org.eclipse.vex.ui/plugin.xml
index ae54d4b..5a1ce81 100644
--- a/org.eclipse.vex.ui/plugin.xml
+++ b/org.eclipse.vex.ui/plugin.xml
@@ -9,9 +9,9 @@
 	<extension point="org.eclipse.core.contenttype.contentTypes">
 		<content-type
         base-type="org.eclipse.core.runtime.xml"
-        file-extensions="*.xml"
         id="org.eclipse.vex.ui.XmlDocument"
-        name="%contentType.XmlDocument.name">
+        name="%contentType.XmlDocument.name"
+        priority="low">
 		</content-type>
 	</extension>
 
diff --git a/org.eclipse.vex.xhtml/plugin.xml b/org.eclipse.vex.xhtml/plugin.xml
index 00ffcb9..18c38e2 100644
--- a/org.eclipse.vex.xhtml/plugin.xml
+++ b/org.eclipse.vex.xhtml/plugin.xml
@@ -2,8 +2,12 @@
 <?eclipse version="3.4"?>

 <plugin>

 	<extension point="org.eclipse.core.contenttype.contentTypes">

-		<content-type id="org.eclipse.vex.ui.xhtml" name="%contentType.name"

-			base-type="org.eclipse.vex.ui.XmlDocument" file-extensions="xml, xhtml">

+		<content-type

+        base-type="org.eclipse.vex.ui.XmlDocument"

+        file-extensions="xml,xhtml"

+        id="org.eclipse.vex.ui.xhtml"

+        name="%contentType.name"

+        priority="low">

 		</content-type>

 	</extension>

  <extension