russian date parser pass tests
code refactoring
implemented adding task from text area in bottom of MainWindow
added test that a table exists on application startup
db changed from h2 to sqlite, fixed NPE in add/edit task dialog, removed ContextItem trait, added foreign key in goals table
removed is_done_checkbox in edit_task_view, field doneState replaced with doneTime
mavenized project, added dependencies for build and test executable jar, removed manifest directory