Document Simulation hooks, close #2226
core: Stringify FastCharSequence in EL
Merge pull request #2228 from maiha/fix/fast_char_seq

Core: Stringify FastCharSequence in EL
StringPart doesn't honor contentType, contentId and transferEncoding, close #2229
Don't parse StaticParts char by char, close #2224
remove dead code, see #2224
minor clean up
Align CLI options with config options, close #2227
Fix option conflict + update documentation, close #2227