Roll back Ivy to 2.3.0 for 0.13.5
Fix resolving Select(ThisProject)
Add scripted test to verify ThisProject is resolved properly
JDK8 compat issue, MaxPermSize removed since JDK 8
Merge pull request #1357 from sbt/wip/roll-back-ivy

Roll back Ivy to 2.3.0 for 0.13.5 for #1356
0.13.5 release.
Fix import issues to generate sxr/scaladoc.
Merge remote-tracking branch 'origin/0.13.5' into wip/fix-doc-generation

Conflicts:
	project/Sbt.scala
Fix formatting issues and bump to sbt 0.13.5
Merge pull request #1359 from ancientrock/jdk8-tip

JDK8 compat issue, MaxPermSize removed since JDK 8
Merge pull request #1358 from dansanduleac/issue/1194

Resolve ThisProject properly
Merge pull request #1376 from sbt/wip/fix-doc-generation

Merge 0.13.5 into 0.13
Merge remote-tracking branch 'sbt/0.13' into 0.13