extends and importnwt use different base path

[enthus1ast]

when curdir is:

C:\Users\david\projects\nimja

then this is valid:

{% importnwt ../../tests/templates/blockMasterWithContent.html %}
{% extends ./tests/templates/blockMasterWithContent.html %}{% block title %}one{%endblock%}{%block mybody%}two{%endblock%}

tested from dynamicAgain branch.