refactoring prepare_deafults
small cleanup
fixed absent guess_lang
rename TemplateHtml -> TemplateTT
fix&cleanup
cache expire time refactoring
new functionality: preload all modules in memory
debug
debug
debug
fix
lowered required versions
should optimize more
fix legacy code
cleanup
Added some tests to nls.t
Merge remote-tracking branch 'upstream/master' into devel

Conflicts:
	lib/PEF/Front/Intro.md
	lib/PEF/Front/Validator.pm
Changed some tests in nls.t
Changed nls.t
Added some pod to NLS