Fixed bug that caused page not found error when referencing internal pages.
Changed so that wmt server installation is relocatable.

Changed
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* The wmt.ini config file now has a *paths* and *url* section.
  Combined, these two sections used to be the *wmt* section.
  The *wmt* section has been removed.
* By default, paths in the *paths* section are now relative to
  the installation directory.