Show queue times

[nathan-osman]

There needs to be a label next to queued items showing the estimated time when they will be tweeted.

What This Involves

The www/templates/queue.html template controls what is displayed on the queue page. Right above the <div class="media"> block, there should be a line that states something to the effect of "queued for tweeting in xxx minutes / hours / whatever".

To calculate this, you will need to know two things:

• the current tweet interval (which can be accessed in a request handler by s.queue.Settings().QueueFrequency)
• the time of last tweet (s.queue.LastTweet(), which returns a time.Time)

The handler for the queue page is queueHandler() in server/queue.go. The app uses pongo2 for templates and it may be easiest to create a template filter / tag that adds a time.Time and time.Duration together.