ECMS-5455: CLONE - CKEditor table editor loses previously configured cell properties

Problem analysis:
	- Hardcode cell style while opening table properties
Fix description
	- Remove hardcode style
	- Handle style tag in IE.
ECMS-5455: CKEditor table editor loses previously configured cell properties

Fix description
	- Correct code convention
ECMS-5455: CKEditor table editor loses previously configured cell properties
Merge branch 'fix/4.0.x/ECMS-5455' into stable/4.0.x