Resolve "Feature: Send endpoint for attributes"

- change syntax in connect file, avoid colon
- observer-entry now has list of connect-tokens and attributeCall is invoked once when attribute is flushed
- INC_FLUSH_START and INC_FLUSH_END can now be nested
- fix capitalize for null and empty strings, caused problems when used for empty entityName of context-free-endpoints
- add documentation on finding bugs
- consolidated use of awaitility
- add documentation for attributes and their types
- rename entityIsNormalAttribute to hasAttributeResetMethod (and flip boolean value)