added customize_dynamic_messge function + test
call to customize_dynamic_message in send_schedule
renamed dynamic_content to content_variables+ changed structure of content_variables
added 'contentVariable' prefix
work in progress
fixed regex issue for customize_message
fixed naming convention
merged develop into my branch
fixed failing test customize_dynamic_message
fixed one key content_variable + add content_variable model
added the missing file content_variable.py
fix multi content variable replacement
added support for case insensitve check for participant domain + support for the use fo the domain participants
Merge branch 'feature/dynamic_content_mkt_price' into develop