change documents sections
Changes in the feature according to comments from Yaro
fixing all of Yaro's comments and adding some tests for the documents_controller
changes according to comments from Sampriti
fixing Bryan's comments
add rescue for update_parent_id
pong to Sly: add tests for sad path
Making Bryan pong tests to pass
Merge pull request #512 from betasve/change_documents_section

Change documents sections