API version update 5.122

[AlikhanMussabekov]

VK SDK VERSION: 1.4.7 API version: 5.122

1) Added method for setting up access tokens. 2) Removed VKAudio object since public audio API has been disabled: https://vk.com/dev/audio_api?f=2.%20What%20is%20changing 3) Document model for making calls to VKDocs API added to VKApi object. 4) Changes in API object fields:

VKCounters: 

`++: docs`

`--: documents, events, gifts, messages, notifications, subscriptions, user_photos`,   

VKDocs:

`++: preview`

`--: photo_100, photo_300`

VKGroup:

`++: is_advertiser, age_limits, ban_info, can_message, can_upload_video, cover, crop_photo, has_photo, is_favorite, is_hidden_from_feed, is_messages_blocked, main_section, market, member_status, public_date_label`

`--: status_audio, photo_max_orig, is_request, is_invite, photos, photos_count, invite_state, blacklisted`

VKPhoto:

`++: user_id`

`--: photo_75, photo_130, photo_604, photo_807, photo_1280, photo_2560`

VKRelative:

`++: name`

VKUser:

`++: is_closed, can_access_closed, crop_photo, friend_status, has_photo, is_favorite, is_friend, is_hidden_from_feed, maiden_name, military, occupation, online_app, photo_id, timezone, trending`

`--: invited_by, rate, status_audio, status_loaded, relation_partner, photos, photos_count, bdateIntervalSort`

5) Fixed usage of deprecated methods.