[Trellis-developers] constants prefix

[Shaddy Zeineddine]

Similar to global and session variables, constants will be prefixed with 
"TRELLIS_". This will allow us to freely use any name we wish without 
the risk of duplication. It will also allow us to quickly 
spot/differentiate Trellis constants in the code.

The following is a list of constants we have used:

core constants:
BASE_DIRECTORY
FRIENDLY_URIS
ERROR_LEVEL
SMTP_SERVER
TIMEZONE
PORTAL_URI
BASE_URI
DATABASE_PREFIX
COMMON_BASE_DIRECTORY
CLIENT_DIRECTORY
CORE_DIRECTORY
CLASS_DIRECTORY
DATA_DIRECTORY
TEMP_DIRECTORY
MD5_PASSWORDS
UNIQUE_EMAIL_ADDRESSES
SINGLE_COURSE_REGISTRATION
AD_ROWS_PER_PAGE
EXPORT_ROWS_PER_QUERY


client constants:
CLIENT_ID
CLIENT_NAME
CLIENT_FULL_NAME

package constants:
AUTHORING_PACKAGE
ECOMMERCE_PACKAGE
CLASSROOM_PACKAGE
DOCMANAGE_PACKAGE

email addresses:
CLIENT_EMAIL_TO
CLIENT_EMAIL_FROM

templates:
TMPL_DEFAULT
TMPL_COURSE
TMPL_LOGIN
TMPL_AD_DEFAULT
TMPL_AD_LOGIN
TMPL_ERROR

email templates:
EMAIL_LOGIN_INFO
EMAIL_WELCOME
EMAIL_EVENT_WELCOME

I'm not sure if we should treat the templates the same as the rest... 
they might be better located inside of a global variable. 
$TRELLIS_templates['template_name'] and maybe $TRELLIS_templates_email 
or email_templates.