DownloadNotifier: Normal notification for singles

This builds upon the previous DownloadNotifier, but changes the notification style
when downloading single files by removing the big view.
See this post for more information:
https://plus.google.com/u/0/+Mart%C3%ADndelRosarioOK/posts/hgGcgsFqyp6

PS2: Fixing dependencies
PS3: Removing tabs/whitespace
PS4: Fix missing speed text after last patchset.
PS5: Restore previous change, fix missing time this time.
PS6: Reformat layout

Change-Id: Iaab38d7e7f9de3d9eb3deb5f061ee646b346c7cc
DownloadNotifier: Standardize play store and browser downloads

Change-Id: I5e6c5def7dae10d714fd180693e95bc61205a57b
Image: http://i.imgur.com/w3VaRUK.png