guestbook 6.x-2.0

Changes since 5.x-1.0:

#317798 by sun: Fixed guestbook owners cannot post in their own guestbook.
#133506 by sun: Fixed cache not cleared after posting/updating entries.
#831464 by sun: Fixed theme_guestbook_form_comment_form() does not exist.
#250163 by sun: Fixed users can't access their own guestbook without permission.
by sun: Fixed author link broken for posts by registered users.
#742608 by quiptime, sun: Fixed user guestbook tab appears even when disabled.
#301779 by sun: Fixed location of form on separate page not working.
#411486 by tomws, recrit: Fixed destination on entry moderation links.
#616220 by rfay: Fixed comments cannot be added to user guestbook.
#427034 by ankur: Fixed user_save() overwrites global user object.
#243801 by sun: Fixed anonymous users can post with name of registered users.
by sun: Fixed PHP notices.
#353511 by sun: Fixed missing default values for guestbook table columns.
by sun: Added hook_guestbook() invocations.
by smk-ka: Added 'delete' operation to hook_user().
#356362 by Michelle, sun: Fixed 404 and compatibility with Panels.
#355495 by sun: Fixed syntax error in module update to 2.x.
#322730 by Lebeu: Added Finnish translation.
#301779 by sun: Fixed text columns should not define default values.
#307070 rastatt, smk-ka, sun: Updated German translation.
#302941 by sponnet, sun: Changed internal form submit button key name.
#242261 by sun: Added user guestbook as Panels 2 content-type.
#61968 by sun: Allow editing of guestbook posts by owner and administrators.
#208389 by sun: Display only related post when adding a comment.
#224513 by sun: Changed owner comment form field into a textarea.
#292998 by sun: Added User Display API integration.
#295025 by sun: Added uninstaller.
#295015 by sun: Code clean-up.
#292010 by smk-ka, sun: Fixed admins cannot access guestbook of blocked users.
#258793 by forschi: Fixed n/a instead of entry displayed for anonymous users.
#243590 by mdatab: Fixed email notification for new guestbook entries.
#244365 by seals: Added Swedish translation.
#193672 by sun: Changed paths to add guestbook entry (sign) to guestbook/sign,
resp. user/#/guestbook/sign.
#193672 by sun: Changed guestbook paths for user and site guestbooks.
#193672 by sun: Moved gettext translation files into translations.
#193672 by sun: Ported Guestbook for Drupal 6.x.