add b-fb-comments in b-lecture
b-homeworks
upd for IE:  add .css file, set border=0 to img
Data (json files)
refact i-api-index
Del block i-jquery, because jquery included in index.js by default.
comments
readme
Merge branch 'feature/final-preparations' into develop

* feature/final-preparations:
  readme
  comments
  Del block i-jquery, because jquery included in index.js by default.
  refact i-api-index
  Data (json files)
  upd for IE:  add .css file, set border=0 to img