Added test in test_glm.test_high_level_glm_null_contrasts and fixed a glitch in test_glm.generate_fake_fmri_data
Added test in test_glm.test_high_level_glm_null_contrasts and fixed a glitch in test_glm.generate_fake_fmri_data

nipy/nireg,bthirion/nipy,alexis-roche/register,arokem/nipy,bthirion/nipy,alexis-roche/nipy,alexis-roche/nipy,alexis-roche/nipy,bthirion/nipy,arokem/nipy,alexis-roche/register,nipy/nireg,alexis-roche/nireg,nipy/nipy-labs,arokem/nipy,alexis-roche/niseg,arokem/nipy,alexis-roche/nireg,nipy/nipy-labs,alexis-roche/register,bthirion/nipy,alexis-roche/niseg,alexis-roche/nipy