Cyrillic support in property-values

when add property with non EN-US value, it try to parse as LATIN 1 when trigger other job. Now it uses right encoding when populate properties without need to unixode-escape

As example - if u want to send `KEY=значение`

this pull-request based on https://github.com/jenkinsci/parameterized-trigger-plugin/pull/50

Feel free to ask anything, thx