fix(init): add missing indexes
fix(init): add missing indexes

- index archived by item
- index item_comments by item
- index content_templates by next_run
- index activities by user + _created
- index legal archive by versioncreated

SD-3389

ancafarcas/superdesk-core,mdhaman/superdesk-core,mugurrus/superdesk-core,ioanpocol/superdesk-core,mugurrus/superdesk-core,superdesk/superdesk-core,superdesk/superdesk-core,mugurrus/superdesk-core,petrjasek/superdesk-core,ioanpocol/superdesk-core,superdesk/superdesk-core,petrjasek/superdesk-core,petrjasek/superdesk-core,ancafarcas/superdesk-core,marwoodandrew/superdesk-core,mdhaman/superdesk-core,ioanpocol/superdesk-core,hlmnrmr/superdesk-core,marwoodandrew/superdesk-core,mdhaman/superdesk-core,petrjasek/superdesk-core,nistormihai/superdesk-core,superdesk/superdesk-core,hlmnrmr/superdesk-core,nistormihai/superdesk-core