Enhanced auto-increment custom field format

This modification would allow:
● creating four-digit auto-increment custom field on Contact in string format: ‘0001’
● creating four-digit auto-increment custom field on Project in string format: ‘1000’
● creating a calculated field on a project linking these two numbers in the "0001-1001" format, i.e. another project of the same client would be "0001-1001", another project of another client then "0002-1002"

Moreover, this new number could be filtered on all cash reports. So far, you can see custom fields only in Cash flow and Portfolio Overview. Newly, it could also be filtered in Planned purchases, Purchases, Planned incomes, and Real incomes.