removed some redundant Boolean isntantiations

Signed-off-by: Laszlo Hornyak <laszlo.hornyak@gmail.com>
new unit test for ApiResponseHelper

- unit test for getDateStringInternal
- StringBuffer replaced with StringBuilder, string concatenation replaced with append

Signed-off-by: Laszlo Hornyak <laszlo.hornyak@gmail.com>
Removed commented-out code

A big block of code commented out for about a year.

Signed-off-by: Laszlo Hornyak <laszlo.hornyak@gmail.com>
Basic tests for ApiServlet

new tests for ApiServlet covering
 - utf8Fixup
 - some of processRequestInContext

minor cleanup done in StringBuffer handling and utf8Fixup got a bit shorter

Signed-off-by: Laszlo Hornyak <laszlo.hornyak@gmail.com>