intorducing a file to hold the constant string values that are commonly and frequently used in the client code
intorducing a file to hold the constant string values that are commonly and frequently used in the client code


Former-commit-id: 16ad36caa48ee9c935a07057c238d094ca3b8153
webgme/webgme-engine,webgme/webgme-engine,webgme/webgme-engine