add off xpath example
Add basis of execute_xpath_expr func
Realize execute_xpath_expr. Start to save output somewhere
Test output in console
Merge branch 'task_1' of github.com:smurav/db2013 into task_3
Finish @execute_xpath_expr. Output in console.
qt_connect(ui-actionChoose, slot-triggered)
Fix duplicates in output
Merge
Connect all it - task 2