added tableview to select board
added classes and views for board/row selection
added attributes for appkey, token and api data
integrated board list data into board selection view
connected and transfered data from board selection to row selection
removed not needed code ..
transfered selected board data and filled row selection with trello data
connected trello row selection with main todo list
corrected attribute/variable names
Merge pull request #7 from rombald/integrate-trello-board-and-row-selection

Add view to select trello board and row to save ToDos