[XB] Post As User 2.1.3

QuoteBook support
Fixed cookie deletion on unchecking "save input" checkbox

Added XFMG and XFRM support
Added checkbox to save latest "posted as" username

Added option: user blacklist/whitelist

Fixed incorrect user saving in "last reply from" field on conversation create

Added ability to posting as non-exinting user (as guest) with own permission for each content type

Fixed incorrect "username" column value saved in conversation
Added Russian translation (import xml file in add-on archive)

Added checkbox option in conversation start form to engage creator as recipient (otherwise, only the recipient and user as who it was send will be able to see the conversation)

Support profile posts and comments (with own permission to post as another user)
Use regular expression to find editor row for better compatibility

Refactoring
Conversation support (requires own "conversations" permission)