initial commit
add TODO file
build crag topo.
response click event.
Use base64 to encode/decode mongodb ObjectId.
Add TopoServlet.
Disable AuthenticationFilter.
Add editWall page.
Add routes info to wall detail page.
Add topo to wall detail page.
Fix search wall list.
open link in new window.
Add edit button.
Add tab for wall detail page.
Add page for creating wall.
highligh route on topo.
Add page editRoutesOnWall.
refactor topo.js to add namespace.
enable submit button.
do enrich/simplify in wall api.