tests improved
code fix
tests improved
Merge pull request #2353 from Ragazzo/tests_improved

tests improved
CS fix.
further improved custom panel setting.
support panel hiding.
Removed unused assignment
Removed unused namespace imports
Removed unused variables
Merge commit '4a201c7ad5b1baad3487d21d888f6e683052017f' into feature/toolbar-ui-2
fixed code-style