RNS-1314 (refinement): Trafficserver initialization.  Create Engine manager before launching async config thread.
module-initcollection.adoc: Minor fixes to the init_collection module documentation.
tc_smart_stringencoders.rb: Adding unit tests to ensure that string encoders function on lists.
tc_utf8.rb: Check that a sample transformation from the utf8 module handles lists.
tc_smart_stringencoders.rb: Fixing asserts.
docs: Regenerate modules doc.
transformation.cpp: Improving error message when failing to find a transformation.
docs: Correct spelling of RelevantOnly.