Advangelists Prebid Server Bidder (prebid#952)

Add scheme to Origin header + add X-Forwarded-For and User-Agent head…

…ers (prebid#958)

Vrtcal Markets, Inc Adapter Integration (prebid#928)

* Master re-pull /w Vrtcal updates

* Vrtcal Updates

PBS-409: add flag for AMP requests (prebid#917)

* PBS-409: add flag for AMP requests

* PBS-409: streamline recent code changes

* PBS-409: change new arg from struct to pointer, update new adapters

Cache validation fix (prebid#911)

* Cache validation fix

if no bids returned - don't throw cache error, just return empty result

* Cache validation fix

- optimization: do not run auction logic if no bids returned

* Cache validation fix: minor refactoring

* Cache validation fix: minor refactoring

* Cache validation fix: added unit test for no bids returned

* Cache validation fix: minor refactoring

Add a PI exemption environment variable to PBS (prebid#916)

* Refactored to official name of config item

* Changes suggested by Mansi Nahar

Replace Dockerfile Alpine linux with Ubuntu (prebid#885)

* Ubuntu dockerfile works, includes backups and out file

* Ubuntu Dockerfile creates image successfully and prebid-server was tested with a sample request. Seems to work fine

* Ubuntu 18.04 now builds, validates.sh, and curls sample request successfully

* Removed sed command

Fix Rubicon bidder for multi-format impression processing (prebid#902)

changed sonobi user sync UID replacement macro (prebid#884)

Adds a Stored Video Request Fetcher (prebid#865)

* Adds a Stored Video Request Fetcher

* Fixes two video defaults coppied from the full stored requests struct that don't exist in the slim version.

* reenamble category support for OpenRTB and AMP in case use cases evolve

* endpoint deps minor refactor after PR comments

* Fixes inconsistencies in setting default values (old code broke setting via ENV variables)

* adds some comments on stored videos

* Fixes another comment

* More PR comment fixes