The QT provided QM files in QM_FILES got overwritten by the
invokation of the translation function.
Put them into a different variable.
And their name is qtbase_XX.qm, not qt_XX.qm
This fix also translates the "Finder Menu"
When XCA started in 2002, there were no C++ initializers.
Drop explicit initializers from the constructors.
- Fix indentations of section declarators.
- Replace NULL by nullptr when feasible.
- Sort private section: properties first, then methods.
This also seperates UI from the core.
After calling QLocale::setDefault(), the empty QLocale constructor
returns the current default locale.
This is now used instead of XcaApplication::language()
New classes:
- database_model: Manage the database tables (keys, req, cert, crl, templ)
extracted from widgets/MW_database.cpp
- arguments: parse commandline, dynamically create help text
