update to version 0.5.1
some changes for bidi support
Properly clean up container node.
Previously, the test would create a new container node,
losing the reference to the old one, so it never got destroyed.
add some keywords to bower.json
update dstore url
HasDropDown: stop setting CSS classes for arrow direction.
Fixes #339.
remove un-needed required module
Scrollable: fix obsolete reference to dojo/_base/fx/Animation in the doc; remove useless return and other tiny doc formatting improvements
Minor: added a few missing semicolons in popup/HasDropDown functional tests
Viewport.getEffectiveBox(): fix for height computation on iOS8. Refs#348