Gecko does not turn off designMode for HTML insertion.
Fix some gecko specific tests.
Turn off designMode in IE11 during HTML insertion.
Typo in code comment.
Merge branch 'testWymManipulationRawHtml' into

firefoxKeepDesignModeOn
Merge branch 'noPrepareDocInRawHtml' into

firefoxKeepDesignModeOn
Merge pull request #622 from wymeditor/firefoxKeepDesignModeOn

Gecko keeps designMode on during HTML insertion