Method: Displays the content for the tab.

Method: sets whether the current tab should show the save button or not

Method: filters the tabs array from Tribe__Settings and adds the current tab to it does not add a tab if it’s empty

Method: Adds this tab to the list of total tabs, even if it is not displayed.

Method: filters the fields array from Tribe__Settings and adds the current tab’s fields to it

Method: class constructor