doc: Merged/updated old docs for Element.childElements / Element.immediateDescendants. Made immediateDescendants an alias of childElements rather than vice-versa as the latter is depreceated.
doc: Merged/updated old docs for Element.childElements / Element.immediateDescendants. Made immediateDescendants an alias of childElements rather than vice-versa as the latter is depreceated.

loduis/prototype,sdumitriu/prototype,292388900/prototype,leafo/prototype,erpframework/prototype,Jiasm/prototype,sdumitriu/prototype,fashionsun/prototype,ShefronYudy/prototype,erpframework/prototype,292388900/prototype,ldf7801528/prototype,erpframework/prototype,Gargaj/prototype,Jiasm/prototype,sdumitriu/prototype,baiyanghese/prototype,sstephenson/prototype,ridixcr/prototype,sstephenson/prototype,Gargaj/prototype,lamsieuquay/prototype,sstephenson/prototype,Gargaj/prototype,ShefronYudy/prototype,loduis/prototype,ridixcr/prototype,lamsieuquay/prototype,ShefronYudy/prototype,fashionsun/prototype,loduis/prototype,Jiasm/prototype,ridixcr/prototype,ldf7801528/prototype,292388900/prototype,fashionsun/prototype,baiyanghese/prototype,leafo/prototype,ldf7801528/prototype,lamsieuquay/prototype