Add support for filenames with periods (#420)
Add support for filenames with periods (#420)

This adds support for pages with extra `.` characters in their filenames. Example: Creating a page with the URL of `/test.html` results in a file named `test.html.htm`. This should be supported because the final extension is still `.htm`. Fixes #416
rainlab/pages-plugin,rainlab/pages-plugin,rainlab/pages-plugin