Advanced options for tag-based search of problems (Z4)

Currently tag-based search options under Monitoring?Problems are quite limited, with no support of more advanced logic. The aim of the proposal is to make it more flexible.
1. Existing filter of Monitoring?Problems should be extended to support:
selection of AND/OR condition for all tags
selection of EQUAL/LIKE comparison for each tag individually
2. Conditions having same tag name will be grouped by OR condition
3. Always exact match for tag names
4. Possible implementation and example. It is evaluated as: (Service=“Helpdesk” OR Service=“Billing”) AND (Application Like “Oracle” OR Application like “MSSQL”) AND Datacenter=“FR2”