github: add travis hooks config
github: update travis configuration
github: add universe repository to travis
switch to vle 1.1.999

We keep the compatibility with the stable branch 1.1

- Cleanup the NEWS file
- Move AUTHORS, NEWS and README to markdown format
AUTHORS: update
Switch to 2014
gvle: update AUTHORS
gvle: update website
gvle: fix the matrix value editor

The matrix value conditional experiment port editor has been fixed.
vpz: set duration and begin into the conditions

In order to use the begin and duration into experiment plans, these are
moved from experiment settings to conditions (Closes #143).
Add a vle-1.2.0.dtd file.
Update template package by adding default simulation engine condition.
Update tests into vpz.
scripts: adding script to convert vpz 1.1 to 1.2

Adding a Python3 script to convert the VPZ 1.1 to VPZ 1.2 format (ie.
with the new "simulation_engine" condition).
utils: fix messages in ModuleManager

the error/warning messages were ill-formed for boost::fmt while checking the
compatibility of module versions vs. current VLE version.
utils: remove extra test of finished spawn

into get(string*, sting*) function, a test was performed on the spawn which
lead to the the fact that last log was not taken into account.