Merge pull request #1749 from bmorrise/oemdocdev

[BACKLOG-194] Refactor and docs for /repo/files/{pathId : .+}/metadata
[BACKLOG-194] OEM refactoring for doGetReservedCharactersDisplay
Merge branch 'oemdoc' of https://github.com/pentaho/pentaho-platform.git
into oemdoc
Merge pull request #1750 from e-cuellar/oemdoc

[BACKLOG-194] OEM refactoring for doGetReservedCharactersDisplay
[BACKLOG-194] - Coded service, test, and docs for doGetChildren and doGetRootChildren
[BACKLOG-194] - Coded service, test, and docs for doGetChildren and doGetRootChildren
Merge pull request #1751 from wseyler/oemdoc-dev

[BACKLOG-194] - Coded service, test, and docs for doGetChildren and doGe...
[BACKLOG-194] Refactor and docs for /repo/files/{pathId : .+}/metadata