ENHANCEMENT Moderator UI using built-in GridField
ENHANCEMENT Moved categories UI

Makes more sense for categories to be defined at the ForumHolder level and applied via drop down to each Forum (as a single field this has been moved to the main tab).
DOCS No longer requires TagField module

I have also adopted this module, since I am interested in anything that help people connect and share knowledge online it fits my philosophy :)
DOCS Update the installation doc

Mention composer as a recommended way to install, also that manual directory can also be used.
DOCS fix typo
Merge pull request #72 from camfindlay/modui

ENHANCEMENT: Moderator UI using built-in GridField
Merge pull request #74 from camfindlay/forumcategories

ENHANCEMENT Moved categories UI
FEATURE Forum email subscription

Will email people if there's a new topic or post started anywhere in that forum they are subscribed to.
moved description from one file to another

I moved the text about how to switch on the subscription from the
Installation to the configuration doc.
ENHANCEMENT - updated to the SS3.1 ORM style.
ENHANCEMENT refactored filename to match class name, class name change to align with code standards, updated to SS3 ORM style, added inline TODOs to be explored and actioned. untested.
ENHANCEMENT refactoring to use SS3 ORM, added TODOs to be discussed and actioned.
ENHANCEMENT refactors of regression errors from renaming the ForumSubscription.
ENHANCEMENT further refactors
TEST added test to check the correct forum email is returned.
FIX array bug and unsublink in email