6.5.0 customer portal issue with login

Review change from 6.5.0 customer portal login issue

See merge request !79

Customer portal login issue in Vtiger 6.5.0

After migrated to 6.5.0, Not able to login in customer portal.

Root Cause:
1. compareEncryptedPassword api present in Functions.php.
2. compareEncryptedPassword api expecting 2nd parameter as string (password).

See merge request !78

This reverts commit ec067d9b.

This reverts commit ff5b9ac4.

linkify workflow emails

not sure why this hadn't been merge requested earlier, fixes #23

See merge request !73

spell separator correctly fix #193

See merge request !74

fix #221 use assigned_user_id in preference to other users UItype 10 fields

minor improvement that has an effect when there are multiple fields on an entity linking to Users, this helps it pick the right owner field.

See merge request !69

fix #123 custom date field formatter

not entirely sure about the hard coded translate of the date format into something that mysql date_format command understands. This works for the three date formats in standard vtiger, but there could be others. I needed to get "dd-mm-yyyy" into "%d/%m/%Y" format somehow.

See merge request !39

Adjusted schema to make it friendly to STRICT_TRANS_TABLE mode.

fix #176 stop the search box moving down at 90% zoom

See merge request !64

fix #139 due date based workflows

I think this sorts it out without bad side effects

See merge request !65

added all missing Session -> Session2 updates

See merge request !63

Fix notices warnings

See merge request !25