[#653] Fixed nested less imports and error handling
Update documentation/manual/Modules.md

Added Session cache module
providing a simple way to create a custom Assets controller both from java and scala
- scala:
```
package controllers.my
object Assets extends controllers.AssetsBuilder
```

- java:
```
package controllers.my;
public class Assets {
	public static controllers.AssetsBuilder delegate = new controllers.AssetsBuilder();
}
```
Reverse routes includes fixes
Fixed api docs generation, and ensured all the sub projects are now included
don't ignore NotImplementedError exceptions

NotImplementedError can occur when we use reflection to create a plugin or when we instantiate a controller.
Letting this exception propagate can result in a bad user experience i.e. failing silently
Propagating ThreadDeath as well in case of a Fatal error
Improvements for fake requests

* Get Helpers.route to extract the fake request body and use that
* Provide implicit writables for all AnyContent implementations
* Also fixed issue with csrf checks not checking text/plain
Added warning about older Java 7s on MacOS
Merge pull request #585 from freekh/play-monitored-files-addition

Adding monitoring of single files as well as directories
Merge pull request #578 from EECOLOR/patch-1

Update documentation/manual/Modules.md
began modifying JSON existing doc + imported mandubian articles
began modifying JSON existing doc + imported mandubian articles
draft json doc modifs
added JSON doc: combinators, inceptions, transformers + modified basics + handling/serving
[#641] Synchronized access to presentation compiler used by template compiler
Merge pull request #590 from jroper/sync-pres-compiler

[#641] Synchronized access to presentation compiler used by template compiler
Merge pull request #589 from mandubian/json-doc

Json doc evolution
Merge pull request #587 from pk11/notimplemented

don't ignore NotImplementedError exceptions
Merge pull request #584 from jroper/api-docs

Fixed api docs generation, and ensured all the sub projects are now included