UI-3295: Two Icon delete old and new overlap
ECMS-6227 | ECMS-6227  Improve code on template of file UIToolbarContainer.gtmpl
ECMS-6265: SitesExplorer Tree disappears

Problem analysis
- Refreshing Explorer frame causes wrong updating current tab in Side Bar

Fix description
- Only refesh Explorer frame by ajax
Merge commit '27c2ccb5d723bc0e37c677cfec493024367aa682' into HEAD