Corrected -vv parsing, removed debug.

Depending on the log message, debug is written or not on the console.
This use Qt's log level. By default, qDebug is not printed, qWarning is.
In every case, messages are written in a log file (if it has been
specified in the config)

It has been deactivated by default.

Not functionnal yet, it only calls the method as required in the
config.

This is much cleaner, fixes #114, and will allow a project emergency
saving that doesn't rape the posix standard.

It works, though it will required refactoring to work with resize /
split / everything actually...
It just works for a 10s image, period.

The number of frame is now printed in the dialog.

Removed debug.

Introduce support for:
- Workspace management
- Video and audio presets

Some of the provided options aren't working yet. It's only a matter of
time.

Manual buffer copy has been replaced by memcpy in the light video frame.

File->import is now connected, and so is ctrl + I