Switch to side-by-side view

--- a/Allura/allura/lib/exceptions.py
+++ b/Allura/allura/lib/exceptions.py
@@ -1,3 +1,4 @@
 class ForgeError(Exception): pass
 class ProjectConflict(ForgeError): pass
 class ToolError(ForgeError): pass
+class NoSuchProjectError(ForgeError): pass