fix specimen_dang backward compatibility

in old pmag_criteria,.txt specimen_dang with IE-SPEC is actually
specimen_int_dang. This problem is fixed in read_criteria_from_file
function in pmag.py
bug fixes

1) k_prime descition
2) sh: : command not found
3) bug in import pmag_criteria.txt with statistics that are not in
preferences.
small plotting bug
prevent spd MAD from breaking with complex numbers
Merge branch 'master' of github.com:ltauxe/PmagPy
prevent calculating stats in SPD with fewer than 3 points.  health check in thellier_gui to make sure that SPD actually calculated pars.
minor modifications and a new program

1. HUJI_magic_new.py: convert new HUJI format to MagIC
2. orientation magic: make the program pass if no date is specified
3. pmag_basic_dialog: improving HUJI_magic dialog box
	modified:   chartmaker.py => took out pTRM tail checks
	modified:   version.txt => updated version number
fix bootsrtap in thellier auto interpreter

fix bootsrtap in thellier auto interpreter
	modified:   download_magic.py => fixed to accomodate new MagIC search download format
Merge branch 'master' of https://github.com/ltauxe/PmagPy
Merge branch 'master' into menubar

Conflicts:
	chartmaker.py
	thellier_gui.py