Merge remote-tracking branch 'origin/develop' into tkinter

* origin/develop: (631 commits)
  get list of added/modified files using 'git diff --name-only' in Travis config
  Sync Py3 and Py2 easyconfigs of Keras
  Switch default backend to Theano for keras
  Keras/2.0.4 for Python 2.7.13
  adding easyconfigs: Octave-4.2.1-intel-2017a.eb, arpack-ng-3.5.0-intel-2017a.eb, FLTK-1.3.4-intel-2017a.eb, GLPK-4.61-intel-2017a.eb, GL2PS-1.4.0-intel-2017a.eb, Qhull-2015.2-intel-2017a.eb, qrupdate-1.1.2-intel-2017a.eb, GraphicsMagick-1.3.25-intel-2017a.eb, freeglut-3.0.0-intel-2017a.eb, gperf-3.0.4-intel-2017a.eb, xprop-1.2.2-intel-2017a.eb
  adding easyconfigs: gnuplot-5.0.6-intel-2017a.eb, Pango-1.40.5-intel-2017a.eb, libgd-2.2.4-intel-2017a.eb, libcerf-1.5-intel-2017a.eb, HarfBuzz-1.3.1-intel-2017a.eb, GObject-Introspection-1.52.0-intel-2017a.eb
  fix typo in statsmodels source url (/sources/ -> /source/)
  adding easyconfigs: statsmodels-0.8.0-intel-2017a-Python-2.7.13.eb
  adding easyconfigs: scikit-learn-0.18.1-intel-2017a-Python-2.7.13.eb, matplotlib-2.0.2-intel-2017a-Python-2.7.13.eb
  adding easyconfigs: gmpy2-2.0.8-intel-2017a-Python-2.7.13.eb, MPC-1.0.3-intel-2017a.eb
  added mummer patch
  adding easyconfigs: MUMmer-4.0.0beta-goolf-1.7.20.eb
  add FFmpeg easyconfig with support to x265 and LAME
  use 'git diff --name-only' and $TRAVIS_COMMIT_RANGE in Travis config to get list of changed files
  simplify patching of libcdi Makefiles in CDO easyconfig
  {data}[intel/2017a] CDO 1.8.1 + YAXT 0.5.1
  adding easyconfigs: NCO-4.6.6-intel-2017a.eb, ANTLR-2.7.7-intel-2017a-Python-2.7.13.eb, libdap-3.18.1-intel-2017a.eb, LibUUID-1.0.3-intel-2017a.eb
  update CMake dependency to 3.7.2
  adding easyconfigs: SeqAn-2.3.2-foss-2016b.eb
  {bio}[intel/2017a] TopHat 2.1.1
  ...