Merge pull request #482 from timschofield/develop

Develop
Number format validation not required for GL accounts now text account codes are allowed
Andrew Galuski - Location based security
Fix up syntax errors
Corrects the bottom line of the rectangle. Adds comments (info for developers).
Phil Daintree: update tcpdf
Initialise the number of labels before entering the loop
Check that GD functions are present before trying to print bar codes
Check that the GD extension is enabled before printing bar codes
class.pdf.php: Adds comments and regroups AddText and AddTextWarp.
Remove unnecessary call to RestrictLocations
Merge branch 'develop' into KwaMoja-Medical