* combo boxes, size model changed - fixes the issue with the settings exceeding the boundaries
* main window can be minimized
* renaming the main page
* style sheet
* the term "components" will only be used for GUI components (derived from QWidget/ QWidget derived classes) fron now on
* timer, and enabler classes renamed accordingly: CEnableForRuntime, CEnableForDockWidgetInfoArea, CUpdateTimer
* adjusted all dependent classes
* discussion: https://dev.vatsim-germany.org/boards/22/topics/2027?r=2040#message-2040
* fixed bug with ATC station component, wrong signals for booked stations
* booked stations loading to frequently (for each minor change such as online), changed to timestamp based concept
* update booked stations with receiving ATIS/voiceroom to online
* CDigestSignal class: new class and methods for collecting signals, avoiding too many signals - one of the cures for the performance issues
* fixed bug found during testing, missing start for timers when connecting to network
* QFontDialog is not working, as it is affected by the style sheets itself
* Added font settings to the GUI settings tab
* Added font color dialog for fonts
* Several utility methods
This was required with the current project files, otherwise app
resources/plugins cannot be found because they are copied in different
pathes. Can be enabled again, when proper package and install files have been
added.
fixes#295