Bug fix

Fixed an error in the copy constructor that caused a crash when texts
were opened.
QtDebug support for TextBit

Added meaningful debug output for TextBit
Text export (preliminary)

Exporting texts to an arbitrary location From the file menu.
(Morphological analysis not yet included.)
Bug fix (lexical entry glosses)

Fixed a bug that must have been introduced when I was refactoring
Project and DatabaseAdapter.
Removed debugging code
Revert "Removed debugging code"

This reverts commit 3c864dc3ccdde2fe93d54be2b1346f03c74cfcd3.
Removed debugging code
Text export bug

Morphological analyses were not being loaded from the database if the
text hadn't been displayed yet, so those are now loaded during export.