* Rewrites:
- moved PAGE_* to Friendica\Model\Profile class
* Fixed more rewrites from plain (global namespace) PAGE_* to Friendica\Models\Profile class
* CR request:
- moved all PAGE_* constants to Friendica\Model\Contact class
- fixed all references of both classes
* CR request:
- moved ACCOUNT_TYPE_* constants from boot.php to Contact::ACCOUNT_TYPE_*
* Just copy-pasted this code from boot.php, needs to be changed to `const ACCOUNT_TYPE_FOO = x;`
* Ops, melting brain cells here ... :-/
* Use "LEFT JOIN" to always fetch the item. Needed for update routines.
* New conversion routine that now covers every item
* Post update is now activated
* We now use a hash based upon RIPEMD-320 for content and activity
* The hash doesn't contain the plink anymore
* Legacy item fields are now "null"able
* New hash function for a server unique item hash
* Introduction of the legacy mode (usage of old item fields)
* Code simplification
* We don't need the "uri" fields anymore in item-activity and item-content
* Use the "created" and not the "received" date for the hash
* Avoiding several notices
* Some more warnings removed
* Improved uri-hash / Likes on Diaspora are now getting a creation date
* Corrected the post update version
* Ensure an unique uri-hash
* Don't delete orhaned item data at the moment
* Partly reworked, due to strange behaviour
* Some more parts reworked
* Using the uri currently seems to be more reliable
* Using the uri here as well
* Use the hash values again
* Grouped item fields in different categories
* Notices again
* use the gravity (we always should)
* Added hint for disabled post updates
* Notices ...
* Issue #5337: Personal notes are displayed again
* Use the gravity again
* Some more warnings removed
* Even more warnings ...
* Will it ever end? ;-)
* Avoid warning in dbstructure
* Origin and OStatus ...
* There are more warnings solved ... yeah!
* And again ...
* We are not done yet
* And more ...
* And some new places ...
* And more in the feeds
* Avoid some more
* And some backend stuff
* Notifications cleared
* Some more stuff
* and again ...
* It's getting fewer ...
* Some warnings had been hidden in the notifications
* Fix the fix
* And another missing one ...
* We need the owner here, not the user
* Forgotten user
* And more ...
* And some more warnings disappeared ...
* Some more frontend warnings
* Some backend warnings removed
* Fixed sidebar for "vier"
* And more ...
* Some more ...
* And something for "remote self"
* Am I stuck in an endless loop?
* Fix: Clear tag and file field on update
* Preset page content
