Messages that need creating:
* `apihelp-collection+addarticle-param-namespace`
* `apihelp-collection+addarticle-param-title`
* `apihelp-collection+addarticle-param-oldid`
* `apihelp-collection+addcategory-param-title`
* `apihelp-collection+addchapter-param-chaptername`
* `apihelp-collection+getbookcreatorboxcontent-param-hint`
* `apihelp-collection+getbookcreatorboxcontent-param-oldid`
* `apihelp-collection+getbookcreatorboxcontent-param-pagename`
* `apihelp-collection+getpopupdata-param-title`
* `apihelp-collection+postcollection-param-collection`
* `apihelp-collection+removearticle-param-namespace`
* `apihelp-collection+removearticle-param-title`
* `apihelp-collection+removeitem-param-index`
* `apihelp-collection+renamechapter-param-index`
* `apihelp-collection+renamechapter-param-chaptername`
* `apihelp-collection+settitles-param-title`
* `apihelp-collection+settitles-param-subtitle`
* `apihelp-collection+settitles-param-settings`
* `apihelp-collection+suggestarticleaction-param-title`
* `apihelp-collection+suggestundoarticleaction-param-title`
* ``