Minor release with everything from 3.0/2.5.2 plus the following improvements.

Improvements:

• Improved database migration - create indexes after inserts;
• Improved rpc error handling;
• Moved component tb-contact to shared module;
• Updated Czech translation;

Bug fixes:

• UI: Dashboard page fixes and improvements;
• UI: Fix map tooltip actions;
• UI: Input maps fixed: error create the first marker;
• UI: Fix image map initialization;
• UI: Fix state chart subscription;
• Set correct cassandra datacenter;