They are needed to fetch prices from deckbrew and possibly, in the
future, for ssl server connections

* Move all cmake-related files in a new “cmake” folder
* move nsis files in there, too, since they are templates parsed by cake
* retrieve git version once when cmake is run, and use it for both
creating version_string.h/cpp and for package naming

It's making travis complicated

Ref #127

This has been obsolete a long time

By now tested on OSX only

By now tested on OSX only

* define CMAKE_INSTALL_PREFIX
* define compilation flags
* find needed libraries
* enable Qt4’s automoc
* Added comments