Generic search - view link

- add new getter for render link
Content link actions

- add css and links
Client actions and custom templates

- support for client side actions related to whole schema
- support for custom templates defined in data part
EventRegistry - supports entity-created event.
NumberMangler- [FINISHED #78890862]
CsvImport added method to support conversion to numbers [FINISHED #78890808]
Schema editor tabs used instead spaces.
Sequencers-support for next higher. (max+1).
Removed some silly logging.