connected v0.7.1

Connected changes for v0.7.1:

• changed size of Save/Load, Welcome and Setting windows
• added support for ESC key for modal window
• added opening files via double-click in Load window
• fixed resizing duplicated Choice node
• Set Variable: "Always" is now standard mode for assigning values, instead of "Only when new"
• changed node definition JSONs into a single config file (pro only)