issue #12: implemented basic download management

[art-divin]

No description provided.

[art-divin]

Implemented listing of active downloads

[insidegui]

I will make some modifications and merge this as soon as I can. Thank you.

[art-divin]

@insidegui please tell me what would you like to change and I'll work on it 😉

[insidegui]

I didn't revise the code yet, but to be honest I didn't like the UI at all.

We need to get rid of the table headers and show the session's title instead of the raw URL. I think Safari's download manager would be a good reference.

[art-divin]

@insidegui I've made improvements, please check it out and send some feedback when you'll have a chance, thanks!

[insidegui]

Good. I am making some changes to the UI right now, It's close.

[insidegui]

Almost done :)

[art-divin]

Looks very nice :) If its not a secret, where did you get icons? Some freeware asset resource or something?

[insidegui]

There are standard images on OS X, the "cancel" image is called NSStopProgressFreestandingTemplate and the "refresh" image (not shown in the screenshot above) is called NSRefreshFreestandingTemplate.