Updated versions.md

Removed Jacobe, when seems to have been removed from Tiobes products.

Fixed some Javadoc issues

Updated versions.md with release data for version 1.9.3.5

Updated instructions for installing libraries into the local Maven re…

…pository for the .NET plugin.

Bug #396 Github mirror missing JavaVersion.java

Merge branch 'master' of https://github.com/robo-code/robocode

make it clearer which C# compiler version to use

Create a single staging folder for shadows instead of sub directories…

… under %temp%

Manual merge of pull request robo-code#6 for Naval Robocode as this p…

…ull request could not be automatically merged with GitHub as it contained merge conflicts.