Merge pull request #5486 from rajendrag/2.4.x

Keys.devSettings to PlayKeys.devSettings

documentation/manual/detailedTopics/build/SBTSubProjects.md

@@ -153,7 +153,7 @@ project
   └ plugins.sbt
 ```
 
-> **Note:** Configuration and route file names must be unique in the whole project structure. Particularly, there must be only one `application.conf` file and only one `routes` file. To define additional routes or configuration in sub-projects, use sub-project-specific names. For instance, the route file in `admin` is called `admin.routes`. To use a specific set of settings in development mode for a sub project, it would be even better to put these settings into the build file, e.g. `Keys.devSettings += ("play.http.router", "admin.Routes")`.
+> **Note:** Configuration and route file names must be unique in the whole project structure. Particularly, there must be only one `application.conf` file and only one `routes` file. To define additional routes or configuration in sub-projects, use sub-project-specific names. For instance, the route file in `admin` is called `admin.routes`. To use a specific set of settings in development mode for a sub project, it would be even better to put these settings into the build file, e.g. `PlayKeys.devSettings += ("play.http.router", "admin.Routes")`.
 
 `conf/routes`: