No longer runs the build artifacts, docs-content, dashboard, screenshot deployment tasks on Pull Requests. This means that there aren't any noop jobs running anymore
* No longer just skips the unit test and e2e tasks if only markdown files changed. Now everything will be skipped, since there is nothing that tests against the `.md` files.
* Prints messages for the deploy tasks that run inside of Pull Requests but end up in a NOOP.
* Now re-runs the given deploy mode a second time if failed the first time. This ensure that deployment works fine most of the time and should also avoid conflicts between different Travis CI jobs that are deplyoing at the same time.
* Currently the screenshot tool application is not built in the deploy script. This causes Firebase to throw an error because the target directory does not exist.
Currently every deployment runs in a single Travis job concurrently. This messes up the logs and it's also hard to see what actually runs at all.
The different deployment jobs should run concurrently in the deploy build stage.
Paul Gschwendtner