Add loading of img urls from subreddit name.

Use reddits json api to find image urls and add them to a list. To edit
which subreddit to find pictures from, just edit the name in the
subreddit file.
Limit number of links to 1000
bluedart added

bluedart display images and does som message passing
Default to /r/kittens when subreddit doesn't exist
Merge branch 'dev' of github.com:Programvareverkstedet/pensieve into dev
Show pictures from given subreddit