OPAL-1681: Error message when search service is not started.
OPAL-1681: Warnings when search service is not available for variable filter and global variable search
OPAL-1681: New css for variable search box and on event variableselectionchanged select the table on the tree view.
OPAL-1709: Fixing filter when service is stopped or table is transient
Removing help text for writing custom Regex expressions
Merge pull request #129 from emorency/feature/opal-1681-filter-variables

OPAL-1681 filter variables improvements