Merge branch 'tomahawk'.

Adds the Tomahawk music player (https://www.tomahawk-player.org/) in
version 0.8.1 and all its required and optional dependencies.

* tomahawk:
  tomahawk: Add new package, version 0.8.1.
  libjreen: Add new package, version 1.2.0.
  websocketpp: Add new package, version 0.4.0.
  lucenepp: Add new package, version 3.0.6.
  qtkeychain: Add new package, version 0.4.0.
  libechonest: Add new package, version 2.3.0.
  quazip: Use qt instead of qt5 for refering to Qt.
fix evaluation (bad meta.license)
apulse: update from 0.1.2 to 0.1.4
cppcheck: update from 1.66 to 1.67
httrack: update from 3.48.19 to 3.48.20
emacs24Packages.rainbowDelimiters: update from 1.3.12 to 1.3.13
csound: update from 5.19.01 to 6.03.2
kde4.digikam: update from 3.5.0 to 4.4.0, potentially fixes CVE-2012-4514
mpv: update from 0.6.1 to 0.6.2
redshift: update from 1.8 to 1.9.1
Add package 'xml2'.
npth: bump
haskell-js-flot: add version 0.8.3
haskell-js-jquery: add version 1.11.1
Merge pull request #5040 from rycee/newpkg/xml2

Add package 'xml2'.
haskell-js-jquery: disable the test suite

... which wants to access the network.
gnupg-2.1: Add socket activation patch
vim: add plugins
Add Flow

A static type checker for JavaScript
Merge pull request #5044 from puffnfresh/package/flow

Add Flow