Fix wiki urls

[PaulKiddle]

Some links were broken during migration. I've identified the following broken wiki links using a crawler. This does not include broken external links.

Broken Url	Source page
-category-administration---interface	/
-category-content	/
-category-basic-training	/
-category-advanced-training	/
-category-communication-tools	/
add-a-biological-classification--import-from-eol-video	/
add-a-biological-classification--import-your-own-classification-video	/
-category-video-tutorial	/
glossary-glossary-sandbox	/
drupal	glossary
glossary-glossary-web-browser	glossary
emonocot-scratchpad-differences	emonocot-help
glossary-glossary-taxonomy	Add-a-biological-classification
glossary-glossary-eol	Add-a-biological-classification
glossary-glossary-parent	Add-a-lexicon-glossary
glossary-glossary-child	Add-a-lexicon-glossary
glossary-glossary-darwincore	Add-locations-and-specimens
glossary-glossary-bis	Add-locations-and-specimens
glossary-glossary-gbif	Add-locations-and-specimens
glossary-glossary-content	Admin-menu
glossary-glossary-shortcutmenu	Customize-shortcut-menu
glossary-glossary-overlay	Edit-the-front-page
-file-biblio-endnote8-xml	Import-literature
-importing-the-data	Importing-a-worms-classification
-creating-a-new-classification	Importing-a-worms-classification
glossary-glossary-itis	Itis-standard-fields
adding--26-editing-users	Publication-module
file--revisions-compare-png	Revisions
glossary-glossary-facetedbrowsing	Searching
special-categories	Task-list
template-help-recipe	Task-list
what-s-new-in-scratchpads-2-0-	Task-list
known-migration-issues	Task-list