Merge branch 'release/0.12.30'
add archetype guide to README.md
fix todo list in README.md
add astmause.com link to README.md
add English user guide link to README.md
write list render test in a more functional way
write doc
fix book info
did some more works for form validation, but I think there are something wrong...
message handle does not need to throw exception
write doc
allow initialize asta4d in spring mvc
source minor fix
split configuration initialization from Asta4dServlet
write doc
allow extra attribution and var declaration on remaped rules
write doc
write doc
allow initialize from external configuration file when integrated to spring mvc
message handle does not need to throw exception