A.F....... [ZBX-8764] Add missing validation for resource ID in screenitem.create and screenitem.update API, resource ID is now set to 0 when screen element type does not use it. Also fix screen item edit views to properly handle resource ID.

git-svn-id: svn://svn.zabbix.com/trunk@49662 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2
.......PS. [ZBX-8621] added validation of received SNMP responses and warnings in case SNMP responses are bad

git-svn-id: svn://svn.zabbix.com/trunk@49663 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2