NcjTemplateService issues when templates not loaded

[ascobie]

This is a funny one and is hard to replicate as it normally happens only the fist time i launch the app from a plugin URL first thing in the morning.

Seems that the templates are cleared out and the call to NcjTemplateService.getApplication fails with the error: "Cannot read property 'filter' of undefined". Seems to point to this:

    getApplication(applicationId) {
        return this.get("index.json").map((apps) => {
            const data = **apps.filter**(app => app.id === applicationId).first();
            return data && new models_1.Application(Object.assign({}, data, { icon: this.getApplicationIcon(data.id), readme: this.getApplicationReadme(data.id) }));
        }).share();
    }

apps must return null and the call to filter fails.

Might be that there is a period of time between when the templates get cleared and refreshed where there are no templates for this query to call on.