* fix: merge conflict
* fix: restored missing set_gst_state_and_state_number function
* fix: style linting as per codacy
* fix: Fixes related to customer/lead merging
* fix: merge conflict
* fix: Fixes related to customer/lead merging
* fix: Assign isue/opportunity to user
* fix: Assign isue/opportunity to user
* fix: Replaced Invoice type by GST Category
* fix: merge conflict
* fix: merge conflict
* fix: test cases
* fix: test cases
* [enhance] added & linked Issue Type & Opportunity Type with opportunity
* [patch] create issue and opportunity type from the custom field if available
* [minor] issue_type and opportunity type should be mandatory
* [patches] removed try catch from the patch
* [fix] patch
* [refactor] cleanup issue/opportunity type
* Use Python 3 style print function
* Use 'Exception as e' instead of 'Exception, e'
* Unpack tuple arguments explicitly in instead of relying on auto unpacking
* Use consistent indentation
* Use 0 if stock_frozen_upto_days is None
When an email address from the contacts form is from a existing lead utils.py tries to set new_lead(an undefined var) as the lead reference if a lead is found.
