Allowing to change font size, type and color.

1. Write a test

2. Write a macro StyleMacro class with syntax

{style:type=div or span|id=idofthetag|class=classofthetag|font-family=..|font-size=|color=|background-color=}
this is the text{style}

matching with:
<div or span id=" " class=" " style="font-size:..; color:...; background-color:...; font-family: .. ;"> this is the text </div>

3. Write 2 functions to convert to external and internal when we switch from wysiwyg editor to wiki editor

4. Support font type/size/color for the wysiwyg editor