fixed memory leak in the setup wizard
[#334] save tx label and details
[#334] moved some strings to the XIB
[#334] refactoring in popover view

this should allow hiding any field in the bottom part of the popup
depending on what transaction fields are saved, and the constraints
will be updated automatically
[#334] added label and details to the popup
[#334] wrapped the details field in a scroll view
[#334] moved share button to the popup
[#334] cleanup in popover controller