master
regroup lab02 and lab05. move some tasks to lab03 and lab04
remove some links to code complete move task 2361, 2801, 3490, 5063, 5870 to coded tasks rewrite solution in 3943, 6522, 7619 to remove logical operators rewrite info after task 9298 to reflect better order of writing code
add some tasks to loops, conditions and arrays
fix bugs, clarify some tasks
regroup tasks in lab04 to emphasise syntax if there are more than 2 case in program. add more tests to lab04 and clarify some descriptions
multiple minor fixes. add task 7323 to use loop after loop.
replace plus sign with word "Найдено". add task to search in multiple columns simultaneously