linking from property pages

linking author names in property pages to find_author.php and also the
names of neuron to neuron_page.php.
Help_release_notes.php modified

Help_release_notes.php modified by work done by prerak.
Fixed #103

Edited num decimal points displayed for ephys values (matrix, neuron pg,
and evid pg)
Fixed #82

On neuron page, added "none known" when we have no info for molecular
markers (either positive or negative) or ephys
Merge branch 'master' into ephys_decimal_pnts

Conflicts:
	property_page_ephys.php
Merge branch 'master' into neuron_pg_none_known
Merge branch 'master' into evidence_page_links

Conflicts:
	property_page_ephys.php
Merge branch 'master' of https://github.com/hippocampome/php