FLUID-4698: setting font-size on html

[jobara]

Modified the textSize enactor to set the font-size on the root element (html) instead of the container (body). This will allow support of rem units. Another change with this was to set the value in px instead of ems. This is necessary since the root element has no parent for which to base it's value on. The unit tests have been updated.

http://issues.fluidproject.org/browse/FLUID-4698

[cindyli]

There's an issue with this pull request:

1. Adjust src/demos/uiOptions/index.html to set the root element with font-size: 2em (or 32px);
2. Open src/demos/uiOptions/index.html, the initial font size is set correctly with the big fonts;
3. Simply open UIO panel without adjusting any setting, the font on the page shrinks to the default browser font size.

[cindyli]

@jobara, another issue is the change on the font size is not applied to the UIO panel when you close and re-open it. The change is applied to the main page correctly.

[cindyli]

Enactors-test.html and UIEnhancer-test.html fail in IE (tried with IE8 & 9) but not other browsers.

In the master branch, Enactors-test.html already fails with UIEnhancer-test.html passes. Perhaps an opportunity to fix Enactors test too.

[jobara]

@cindyli I tested in IE 8, 9, 10, & 11.

I've filed a new jira for the enactor failure for lineSpace http://issues.fluidproject.org/browse/FLUID-5320

I wasn't able to reproduce the failing tests for UIEnhancer.

In IE 8 I also had a failure for the builder tests but they seemed to be related to jqUnit not being created properly. I'm not sure why this is happening though.

[cindyli]

We can address the builder failure in IE8 in another jira since it happens for the master branch too. I've filed a jira for it: http://issues.fluidproject.org/browse/FLUID-5323

In terms of the UIEnhancer failure, I cannot reproduce it with sauceLabs environment too. It might be something specific in my local VM.

[cindyli]

Merged into the project repo @ c7c61c4