Doman tab style issues

[NadyaMurash]

1. Chains need to be collapsed under domain by default.
2. "Domains" header font is 20 (on other pages it is 18)
3. Table styles (header names, colors) are different then on other pages.
4. Move Search and Column Settings button on the same level as header.
5. Column Settings button column names differ from actual table names.
6. Remove redundant horizontal scroll bars.