fix(developer): show relative path in Distribution tab

For the Project view, the Distribution tab now shows file relative
paths, which helps with organization. Have opted _not_ to show the
relative paths in the other tabs, because that information is visible
when the file details are expanded, and because those files should
always be in SourcePath anyway.

developer/src/tike/xml/project/distribution.xsl

@@ -83,6 +83,7 @@
             <xsl:call-template name="file">
               <xsl:with-param name="file_description"></xsl:with-param>
               <xsl:with-param name="file_has_details">false</xsl:with-param>
+              <xsl:with-param name="file_relative_path">true</xsl:with-param>
             </xsl:call-template>
           </xsl:for-each>
         </div>

developer/src/tike/xml/project/elements.xsl

@@ -76,6 +76,7 @@
     <xsl:param name="file_description" />
     <xsl:param name="file_has_details" />
     <xsl:param name="file_has_no_options" />
+    <xsl:param name="file_relative_path" />
 
     <span tabindex="1" class="file" onmousedown="javascript:this.focus();">
       <xsl:attribute name="id">file<xsl:value-of select="ID"/></xsl:attribute>
@@ -103,7 +104,10 @@
       <div class="filename">
         <a tabindex="-1">
           <xsl:attribute name="href">keyman:editfile?id=<xsl:value-of select="ID"/></xsl:attribute>
-          <xsl:value-of select="Filename" />
+          <xsl:choose>
+            <xsl:when test="$file_relative_path = 'true'"><xsl:value-of select="Filepath" /></xsl:when>
+            <xsl:otherwise><xsl:value-of select="Filename" /></xsl:otherwise>
+          </xsl:choose>
         </a>
       </div>
       <div class="filedescription"><xsl:value-of select="$file_description"/></div>