* develop: (174 commits)
  also test with Lmod as modules tool on Travis
  fix style
  remove Rust easyconfig using intel toolchain, rustc doesn't work
  also install python-graph-dot
  install python-graph-core library required by easyconfig tests
  set $PYTHONPATH
  fix typo
  query GitHub for commit ID of framework/easyblocks branch being used
  remove faulty PIL easyconfig
  make dev version PEP440 compliant
  add easyconfig i-PI-1.0-20160213-intel-2016a-Python-2.7.11.eb
  modify easyconfig PIL-1.1.7-intel-2016a-Python-2.7.11.eb
  Fix failing FSL on RHEL 7
  add test configuration for Travis
  stick to freetype 2.6.2 for compatibility with matplotlib 1.5.1
  add easyconfig PIL-1.1.7-intel-2016a-Python-%(ppyver)s.eb
  usempi is not required for numexpr
  fix path in sanity checks
  modify easyconfig PIL-1.1.7-intel-2016a-Python-2.7.11.eb
  modify easyconfig numexpr-2.5.2-intel-2016a-Python-2.7.11.eb
  ...

also test with Lmod as modules tool on Travis

add test configuration for Travis

remove Rust easyconfig using intel toolchain, rustc doesn't work

{vis}[intel/2016a] NiBabel v2.0.2, PIL v1.1.7, pydicom v0.9.9

{chem}[intel/2016a] i-PI v1.0-20160213

make dev version PEP440 compliant

usempi is not required for numexpr

{math}[intel/2016a] numexpr v2.5.2

{math}[intel/2016a] gdist v1.0.3

add easyconfig NiBabel-2.0.2-intel-2016a-Python-2.7.11.eb, add easyconfig PIL-1.1.7-intel-2016a-Python-2.7.11.eb, add easyconfig pydicom-0.9.9-intel-2016a-Python-2.7.11.eb