Add contact menu option and hide unneeded sections on project page

views/pages/project.dt

@@ -26,13 +26,16 @@ block content
 				i This project has no images.
 		dl.project-platforms-technologies
 			dt Platforms
-			- foreach(platform; content.platforms)
-				dd.tag #{platform}
-			dt Technologies
-			- foreach(technology; content.technologies)
-				dd.tag #{technology}
-			dt Source code
-			- foreach(sourceCodeLink; content.sourceCode)
-				dd
+			- if (content.platforms.length > 0)
+				- foreach(platform; content.platforms)
+					dd.tag #{platform}
+			- if (content.technologies.length > 0)
+				dt Technologies
+				- foreach(technology; content.technologies)
+					dd.tag #{technology}
+			- if (content.sourceCode.length > 0)
+				dt Source code
+				- foreach(sourceCodeLink; content.sourceCode)
+					dd
 					a(href="#{sourceCodeLink.url}", rel="external") #{sourceCodeLink.name}
 		| !{content.content}