views/tree.html: Fix lambda syntax
views/tree.html: Fix lambda syntax

Some versions of bottle.py don't deal well with the "if" inside the lambda, so
work around it by just using comparison and simplifying the function.

Signed-off-by: Alberto Bertogli <aa51a345a0e8173877757331a6c3833d48834cb6@blitiri.com.ar>

oz123/git-arr,oz123/git-arr,oz123/git-arr