COPR:

- improved copr-dist-git's performance by reimplementing MockScmProvider

- again made Pagure repo auto-rebuilding script more error-prone

- implemented Gitlab webhooks

- did some brainstorming with Pavel Raiskup

- reviewed https://pagure.io/copr/copr/pull-request/11

- released and deployed copr-frontend 1.110

- redeployed copr-dist-git machine from scratch due to journal log errors