reorganized tutorials that no longer live in dedicated repos

Rakefile

_tutorials-javascript/account_reputation.md

_tutorials-javascript/blog_feed.md

_tutorials-javascript/claim_rewards.md

_tutorials-javascript/client_signing.md

_tutorials-javascript/convert_sbd_to_steem.md

_tutorials-javascript/create_account.md

_tutorials-javascript/delegate_power.md

_tutorials-javascript/edit_content_patching.md

_tutorials-javascript/follow_a_user.md

_tutorials-javascript/get_account_comments.md

_tutorials-javascript/get_account_replies.md

_tutorials-javascript/get_delegations_by_user.md

_tutorials-javascript/get_follower_and_following_list.md

_tutorials-javascript/get_post_comments.md

_tutorials-javascript/get_post_details.md

_tutorials-javascript/get_posts.md

_tutorials-javascript/get_state_replacement_api.md

_tutorials-javascript/get_voters_list_on_post.md

_tutorials-javascript/getting_started.md