…oth (#8549)

* Lazily create SSLEngineProvider

The creating of SSLEngineProvider and later of SSLContext can be delayed as
much as possible so that we won't need to call ApplicationProvider.get until it is
necessary.

This fixes a problem in the integration of Play and Gradle when using HTTP in
DEV mode.

* Remove parameter and add lazy attribute

…8162)

* Add setting to configure max header value length in Akka HTTP Server

* Configure mima filters

…-data too strict for some implementations) (#8530)

* Implementation for issue #8527 (Content-Disposition of
multipart/form-data too strict for some implementations)

* A little bit more explanation for test case

* Reset to previous Play behaviour for non-file parts (accept only
'Content-Disposition: form-data') as discussed in issue #8527 and pull
request #8530. This is to implement solution 2 proposed in issue #8527.

* Only accept 'Content-Disposition: file' in addition to
'Content-Disposition: form-data' for file parts as discussed in issue
#8527 and pull request #8530. This implements solution 2 proposed in
issue #8527.

Recent SBT seems to interpret Process as default import java.lang.Process instead

* SBTSubProjects.md: fix contradiction about per-project build.sbt

Really per-project build.sbt is not recommended, but it was easier to fix the false statement than to change all the examples.

Also, I think subproject shouldn't be hyphenated but I used the spelling of the rest of the file.

* fixup! 8c18639

* Fix several minor typos detected by github.com/client9/misspell

* Fix a wrong correction

* Fix a wrong correction

Bump play-enhancer plugin version to 1.2.2 in document.

* Fix sbt auto trigger when using sbt 1.1.5+ (#8558)

* Update play continuous watch to support sbt 1.1.5+

From this version, sbt is using `ContinuousEventMonitor` instead of the
old `ContinuousState`. So we need to look for this new configuration instead.

Fixes #8458.

* Remove unused dependency

* Support all sbt 1 versions

* Update interplay to 1.3.17