fix #727 Refresh manager not resumed after an exception in a module controller

Close #735
feat #682 replace `contentMacro` with `macro` in @aria:Dialog

To make API more consistent, let `macro` in @aria:Dialog be a synonym for
`contentMacro`.

`contentMacro` is deprecated from now on.

Close #682. Close #687.
feat #736 Animations for HTML elements

Close #736
fix #737 `childElementCount` not supported in IE8-
fix #738 IE9+ opacity issue
feat #739 extract css.Units util

Extract existing unit manipulation tool.

Add some new methods for reverse direction calculations and also some
helper methods needed for IE8- polyfill of
`getComputedStyle(width|height)`.
They're all in this class instead of `utils.Dom` to avoid circular dependencies.

Also fix some small issues:
- `font-size` -> `fontSize` in a check
- `fontSize` returned can be non-pixel in IE; taken into consideration now
fix #739 consider borders/paddings in getStyle(width|height) in IE
v1.4.10