* [hotfix] throw DoesNotExistError if doctype is not available on Delete api

* [fixes] aded tests cases and codecy, travis fixes

* [fix] remove razorpay from integration service

* [fix] clean-up js side integration service dependancies

* [fix] remove integration service, .py cleanup, move integration request to integration

* [fix] move oauth to integrations and deprecate integration broker

* [fix] mark services enabled and update integrations listing

* [fix] V7.1 and V7.2 integration service related pathch fixes and move payment gateway dotype to core module

* [fix] create payment gateway records if not exists

* [fix] module page for integrations

* [minor][fix] minor checks

* [fix] remove integration broker module only if not allocated to any doctype

* [Fix] oauth url delimiter moved to function instead of global

* [Fix] renamed oauth_url_delimiter to get_url_delimiter

* OAuth 2.0 Classes Added

Added oauthlib in requirement.txt
Added class WebApplicationServer for Authorization code grant and Bearer tokens.
Added class OAuthWebRequestValidator for Validating Oauth Request for Web Application

* copied code from mnt_oauth needs review

* [New] OAuth2 Doctypes and endpoints added

Integrations > OAuth Provider Settings
Integration Broker > OAuth Bearer Token
Integration Broker > OAuth Authorization Code
Integration Broker > OAuth Client
endpoints for authorize, approve, get_token, revoke_token and test_resource

* oauth2.py: renamed skipauth to skip_auth

* [Fix] Parse URL instead of storing it in settings

* [Fix] get skip_auth from OAuth Provider Settings

* Success URL format. Failure URL added. Confirmation dialog layout changed.

* Validate access token if passed during use of REST API

* OAuth Confirmation colours fixed

* Multiple Changes

Added links for OAuth under Integrations in Module list.
Updated permissions on OAuth doctypes.
Updated layout of OAuth Client doctype.

* [Docs] Integrations > How to setup OAuth

* [Docs] Integration > Using OAuth

* [Fix] get_token endpoint must to handle POST request

* [Fix] http verbs and responses for OAuth 2.0 Endpoints

* [Fix] accept oauth2 access_token from headers

* Removed unused imports from api.py

Now understands doc name with '/' in it.
Also stop updating docs to be deleted.