Allow selecting most important apps in the setup wizzard

[mastersign]

The selection is only given, if a new configuration is initialized

• Git
• Primary Text Editor (one)
  • Visual Studio Code (default)
  • Notepad 2
  • Atom
  • Sublime Text 3
  • Spacemacs
  • Emacs
  • Vim
  • TeXnicCenter
• Language Groups (many) (implemented as meta-apps)
  • Java
  • Clojure
  • JavaScript
  • PHP 5
  • PHP 7
  • Python 2
  • Python 3
  • Ruby
  • Go
  • C/C++ (gcc)
  • C/C++ (Clang)
  • LaTeX

[mastersign]

Depends on #93

[mastersign]

added app/group selection list to the wizzard in 0163ae0

[mastersign]

Currently Git is always pre-selected by res\apps-activated.template.txt.