fix #758 test.aria.html.textinput.autoselect.AutoselectTestCase fails on IE 10
fix #759 EscapeOnModalAndNonModalTest fail in IE7
fix #761 test.aria.widgets.icon.IconTest failing on IE10

This commit fixes test.aria.widgets.icon.IconTest which started
failing in d483056c6edf8064781d069101fdca40b874ac15 because the
type of absolutePosition.top in the popup configuration changed
from json:Float to json:Integer (when the config bean was moved
from aria.utils.DomBeans to aria.popups.Beans).

This commit restores json:Float in
aria.popups.Beans.AbsolutePositionConfig.
fix #763 Typo and parameter issue in error message in BindableWidget
v1.4.11
fix #766 IE8 issue when displaying a popup.

This fix has two parts, firstly it will resolve an issue
for animations in IE8 when displaying a popup, and secondly
it refactors a bit the way animations are used, there is now
a getter to load animations when they are actually needed,
and not for all popups as was previously the case (this will
help to improve performance particularly for IE8).
fix #773 Wrong translation in FooterRes_pt_BR.js

Close #774