Merge pull request #13 from lclc/master

Minor cosmetic & build on Linux changes
Include QPlainTextEdit with no file extension (.h)
Renamed MarketWindow.cpp and marketWindow.h to lower case (keep it the same everywhere)
Adding tr() for translation. Please always use tr() for text that is visible for at the user interface.
Merge pull request #14 from lclc/master

Adding tr() for translation. Please always use tr()..
Added all Wizards + Passphrase dialogs.

Signed-off-by: FellowTraveler <F3llowTraveler@gmail.com>