Add Aliases to administration help handbook pages

/node/45134 /handbook/modules/Category
/node/44134 /handbook/modules/File
/node/44137 /handbook/modules/Front
/node/32257 /handbook/modules/Front_page
/node/44144 /handbook/modules/Invite API
/node/31152 /handbook/modules/Pathauto
/node/44468 /handbook/modules/PayPal Subscription
/node/34969 /handbook/modules/Sections
/node/29447 /handbook/modules/SPAM
/node/35473 /handbook/modules/Tagadelic
/node/44148 /handbook/modules/User Invite
/node/43608 /handbook/modules/wgHTML