UI text patches

[Milan Knížek <knizek confy volny cz>]

Hello,

I tried to update texts for "low/normal/high profile precision" and for
the use of "calibrate" or "profile" - possibly still wrong somewhere. (I
have not updated the messages to std out and tried not to touch function
names.)

Patches are attached. (I did not compile and review the text in a
running program though.)

regards,

Milan Knizek
knizek (dot) confy (at) volny (dot) cz
http://www.milan-knizek.net - About linux and photography (Czech
language only)