extracted needed classes and remove crawler4j dependency and java7 requirement
return headers on all requests
Update ru.properties
Merge pull request #475 from res87th/patch-1

Light changes in ru.properties
don't display entries twice when refreshing during loading (fix #473)
code formatting
documentation is now generated during build time and swagger is not needed for runtime anymore
display the base url statically
use an annotation processor instead of a groovy script because of classloading issues
exclude api generator from war
don't expose documentation class in the method signature as it's not available at runtime
copy generated api docs even when prod flag is false