LEDGE-239: prepend servlet path to pathinfo when parsing parameters.
This allows binding ledge servlet to /view and other arbitrary prefixes.
LEDGE-239: don't insert current servlet path into generated URLs.
LEDGE-239: recommended servlet paths in LedgeServlet doc & tests
LEDGE-239: fixed FS root parameter name in docs
LEDGE-239: adjusted servletPath/pathInfo in tests according to new
convetion
Merge branch 'feture/LEDGE-239' into dev