bug fix JFG-602
+ reduce many calls for database
+ fetch control tree data via several treads
+ delete '(temp string)'
Merge branch 'master' of github.com:griddynamics/jagger into ui-bug-fix
+ one thread pool for creating control tree
+ forbid control after link processing, while plots loading
+ greate improvement of database calls
+ add logs to see time of database calls
+ link compatibility with 1.2.2
+ control tree expanded chosen tests/metricson link load
+ let spring handle executorService.shutdown() method
Merge pull request #384 from amikryukov/ui-bug-fix

WEB UI bug fix JFG-602