Closes gh-19366

Fixes gh-15046

* pr/19377:
  Remove duplicate entry for Neo4jHealthIndicator

Closes gh-19377

See gh-19377

See gh-19197

* pr/19340:
  Link consistently to Tomcat 9.0 docs

Closes gh-19340

See gh-19340

* pr/19338:
  Fix link to Vaadin Spring Boot starter

Closes gh-19338

See gh-19338

* pr/19326:
  Polish contribution
  Add missing assertion to SampleTestApplicationWebIntegrationTests.test()

Closes gh-19326

See gh-19326

See gh-19326

* pr/19193:
  Increase cache ttl in CachingOperationInvokerTests

Closes gh-19193

See gh-19193

This reverts commit 52050c17.

See gh-17817
Closes gh-19020

* gh-19197:
  Polish "Honour SSL key alias when using Netty"
  Honour SSL key alias when using Netty

Closes gh-19197

See gh-19197

See gh-19197

* gh-19290:
  Remove redundant hasText check as query always has text

Closes gh-19290

See gh-19290

Closes gh-18900

Closes gh-19286

Update our Oomph setup to use m2e 1.14.0 from their milestone
update site. Unfortunately we need to use the milestone since
the fix for https://bugs.eclipse.org/bugs/show_bug.cgi?id=548652
has not yet made it into a stable m2e release.

Closes gh-19280

Change the Oomph setup to no longer hide nested Maven projects
so that https://bugs.eclipse.org/bugs/show_bug.cgi?id=553789
doesn't get triggered.

See gh-19280

Upgrade our Oomph setup to use Eclipse 2019.9

See gh-19280

Closes gh-19072

Closes gh-19068

Closes gh-19234

Closes gh-19233

Closes gh-19232

Closes gh-19231

Closes gh-19230

Closes gh-19229

Closes gh-19228

Closes gh-19227