relax SVN archive

Removed a duplicated chi2 test from value_test().

The test_local_tm_10_S2_0_8_te_40 model-free system test is now checking the parameter values.

Improved the model-free system test value_test() method to handle all types of model-free data.

This includes not checking certain values or statistic unless specifically asked for.

Created the test_local_tm_10_S2_0_8_te_40 system test for testing model-free optimisation.

Added a new model-free test set, calculated using the new back_calc.py module.

Created a module to aid in the back-calculation of relaxation data from model-free parameters.

Fix for the removal of all data pipes prior to initial optimisation.

The generic_fns.pipes.get_pipe() function was being used to test if a pipe exists rather than
has_pipe(), causing a RelaxError if the pipe does not already exist.

Added pdf files of two previously presented posters of relax.

1. Presented by Edward at ENC 2009 in Asilomar (USA).
2. Presented by Sebastien at MOOT 2009 in Ottawa (Canada)

This follows a thread at:
https://mail.gna.org/public/relax-devel/2011-01/msg00018.html
(Message-id: <4D2C8D60.9050300@...>)

Change an accent for a special HTML character in http://www.nmr-relax.com/refs.html
and http://www.nmr-relax.com/features.html.

This was pointed by Edward in a post at:
https://mail.gna.org/public/relax-devel/2011-01/msg00021.html
(Message-id: <AANLkTinLpE7RW2K2Rh_sSxVgS-jN4scZjQW6bWP7pUNe@...>)

Corrected a typo ('fi' as one letter) in the reference list at http://www.nmr-relax.com/refs.html.

This was pointed by Edward in a post at:
https://mail.gna.org/public/relax-devel/2011-01/msg00022.html
(Message-id: <AANLkTi=EbM3k0676rh=Mz+BEvP8dypkc1QvReXU3bT=N@...>)