update to JS API version 3.11.

add css to fix border container issue when gutter = false. This bug was
introduced in dojo 1.10.0 (used in JS API v 3.11). It was subsequently
fixed in dojo 1.10.1 (https://bugs.dojotoolkit.org/ticket/18097).
This css can be removed when ESRI updates to a newer dojo build.