relax SVN archive

Replicated spectra are set correctly.

Relaxation times are converted into float objects (from strings).

Proton and hetero nucleus type is specified in read intensity function.

The sequence is loaded from a pdb file, if provided.

New arguments are accessible for all functions.

The class Relax_fit reads in the type of calculation (R1 or R2), the frequency, results directory, pdb file and unresolved residues.

Current date was added to pipe name to allow multiple rx calculations during the same session.

Proper openfile dialog was included to the function to open a global pdb file.

A global pdb file can be loaded through the menu Molecule>Load PDB File.

A sequence file can be loaded in the menu and will be assigned to all the analysis tabs.

After importing a sequence file, each structure file text control field will be loaded with this file. The sequence file will also be stored in the relax data storage.