it includes an additional modification to keep multisim in sync when using plumed

When doing plumed patch -e gromacs2016.5 a match with e.g. gromacs2016.4
will be accepted (and issue a WARNING). Useful for automatized patching
procedures.

For instance, in gromacs-plumed package of MacPorts it won't be necessary
to synchronize the Portfile with the exact plumed version.

See #245

* Minor fixes in ves-metad tutorial

Changed wrong file dependency in a gnuplot file, some clarification in the
documentation

* Fixes to ves1 tutorial

Removed unnecessary file
Corrected syntax of example code
Changed gnuplot file for consistency

* Fix in ves-kinetics tutorial

Keyword HEIGHT does not allow multiple values

(cherry picked from commit ae6c8ee4)

This will decrease the number of pull requests from PlumedBot.

Currently, everytime a file is updated and someone forgets to run
headers.sh, the headers are outdated. With this change, this will happen
once per year. PlumedBot will thus mostly fix erroneous copyrights
(rarely happening).

Plumedbot pull request

This commit contains changes automatically generated by plumedbot on Travis-ci.

Plumedbot pull request

This commit contains changes automatically generated by plumedbot on Travis-ci.