Replace direct call to beanutil/convertutil with our own BeanManager component

• beanutils can't be configured to ignore case which is a pain for macro parameters
• beanutils does not support enum or even base class so each enum converter has to be registered one by one
• we already have severall places in different components which use beauntil to load java bean and they can't share custom converters not provided by beauntil, a unique component will permit to add a bunch of converters when initializing it

Note: not sure about the "BeanManager" name yet

See also:

• http://musingsofaprogrammingaddict.blogspot.com/2009/01/getting-started-with-jsr-303-beans.html
• https://bean-properties.dev.java.net/ (seems dead)
• http://oval.sourceforge.net