[Patch] Remove modified wiki-default files from page history
|Reported by:||linetor||Owned by:||coderanger|
In the current version, when you modify a file from trac's wiki-default directory, the plugin will leave the original copy in the page's version history.
It is confusing to have two versions in the page history for a newly created project.
This patch for api.py will cause the wiki-default pages to be deleted before the new versions are added to the wiki.