/*
Determine if Raven is setup and ready to go.

@return {boolean}
function isSetup() {
	    if (!this._hasJSON) return false; // needs JSON support

	    if (!this._globalServer) {
	      if (!this.ravenNotConfiguredError) {
	        this.ravenNotConfiguredError = true;

	        this._logDebug('error', 'Error: Raven has not been configured.');
	      }

	      return false;
	    }

	    return true;
	  }