doc: Merge/update old TimedObserver docs into source [#134 state:fixed_in_branch]
doc: Merge/update old TimedObserver docs into source [#134 state:fixed_in_branch]

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