Much more user friendly INI warning log messages. Also, now if and only if warnings/errors occur when parsing an INI then an 'opening ini_file...' is logged once. Better startup log info. Scroll to end of log when logging a new message.

The color scheme has been redesigned and now follows Solarized (https://en.wikipedia.org/wiki/Solarized_(color_scheme)). Instead of directly coding colors in the code, they have all received symbolic names and then the names are mapped to a specific color. On the long term, we will be able to offer several color schemes, like Solarized, osX, Windows, etc

Initial commit with a layout managed sketch for the main window, a logging window, message- and error-display, some sizing settings, and a first iteration of the qmake file.