added github/list command;
added github/sync command;
added github/search command
added github/info command;
added new commands: github/import, github/delete; little enhancements;
added additional fields for github/info;
big refactoring for github commands;

reduced boilerblates in output formmating;
added delete command;
little fixes;
views are now separated from command executers;
big refactoring for products command;

fixed following commands;
refactored views;
removed boilerplates;
unified namings;
refactored project command;

removed view related boilerplates for project subcommands;
little fixes;
changed project/show to project/info;
refactored user command presentations;
Refactored check command;
updated version; updated docs; updated dependencies;