Improvements in problem lists for MU2.

1) Added a new field "modifydate" in table "lists" which
   will be updated each time the medication is updated.
2) Added new field "ct_problem" in the table "code_types"
   for setting the code types to be displayed while
   adding a "Medical Problem".
3) Made modifications in Add/Edit issue interface to list
   the code types set as "ct_problem".

Signed-off-by: vinish <vinish@zhservices.com>
Integrating the problem list improvements with the recent fee sheet improvements, take 3.
incremented version database for previous commit
Additional Sql-injection functions and techniques for escaping;

 1. Improved/clarified the functions in library/formdata.inc.php
 2. Added mechanism for whitelisting openemr sql table names.
 3. Added mechanism for whitelisting openemr sql column names.
 4. Incorporated it into the messages module
 5. Incorporated into dictation form
 6. Incorporated into work/school form/note
1) Fixed issue related to "Approve" in "list of approvals" >> "view"
2) Query optimization of "Patient uploaded files" listing in "list of approvals"

Signed-off-by: Teny <teny@zhservices.com>
Fixed some weirdness with assigning a message recipient, and allowing a message to be closed with a new note appended and no recipient.
Added procedure order manifest report for orders that need review or going out on paper.
Added transmit timestamp to orders and logic to set and check it.
Added option to omit circumferences in the Vitals form.
Added feature to associate patient notes (messages) with procedure orders and their results.
A couple of bug fixes for manual procedure results.
Patient balance computation improvements on patient summary page.

 -Addressed code review suggestions.

Signed-off-by: Dinesh <dinesh@capminds.com>
Reduced the font size of the billing widget in previous commit
Added administrative utility to merge two patient charts.
Patient merge utility fixes to deal with CouchDB and some suggestions from code review.
The $to_date and $from_date variables were incorrectly referenced as $form_to_date and $form_from_date.