Diff for ShowStoppersFourOh between 20 and 21

+ 4.0 Release Show Stoppers

++ Refactor remaining Framework libraries for H4
* Create list of libraries that need to be refactored
 * Can look for horde/Core dependency in package.xml.  Most (all?) packages should not have this dependency/

* !SyncML
* New Share subsystem
* Horde_Group - accesses $GLOBALS['injector']
 * Various GLOBAL usage
 * SQL driver needs to be refactored to not extend datatree classes
 * does http://wiki.horde.org/HordeGroupAPI still apply? Are we still targeting this for H4?
* Net_IMSP
 * Needs considerable refactoring
 * Possible candidate to drop until next release, but feel since it's a currently supported driver in numerous places.Turba, we should release with 4.0
* Horde_Block
 * Move to Core? At least some parts need to be moved.
* Horde_SQL
 * Need to move functionality that we need to retain into Horde_Db
* Horde_Form
 * PHP5-ify, still has dependency on Core
 * Appears to be some stuff in the Model package, not sure what state it's in.

++ ((Doc/Dev/ConversionH4|Refactor)) remaining *released* apps for H4
* Mail - **DONE**
* Calendar
* Notes
* Tasks
* Address Book
* Mail Filters
++ To be refactored/released for H4 in the future (non-showstopper)
* Photos
* Time Tracker
* Wiki
* Source Repository Viewer
* Files
* Tickets

++ Require Unicode support in both Server and Client
* Consistently use UTF-8 internally. - **DONE**
* Convert data *once* when entering Horde from the backend. - **DONE**
* Remove any other Horde_String::convertCharset() calls. - **DONE**

++ Move translations for framework libraries into the libraries. **DONE**

* Uses horde/Role package to use to install into the correct place.

++ Make apps PEAR installable

++ Browser-based configuration (no more static configuration files)

++ Centralized Session access

* [http://bugs.horde.org/ticket/8023 Ticket #8023]
* Accessed via global $session (or $hsession?) variable
* Merge !SessionObjects functionality into Horde_Session

++ DB schema migrations

* Need to write migrations for all base horde tables, placing them in appropriate framework library packages...how do these get run?
* Postgres BYTEA escaping ([http://bugs.horde.org/ticket/8023 Ticket #9153])

+++ To be released with H4
* IMP - **DONE**
* Ingo - **DONE**
* Kronolith - **DONE**
* Mnemo - **DONE**
* Nag - **DONE**
* Turba - **DONE**

+++ To be released after H4 (non-showstopper)
* Ansel - **DONE**
* Gollem
* Hermes - **DONE**
* Whups - **DONE**
* Wicked - **DONE**

++ !CalDAV Server

++ Application Renaming

++ H3 Upgrade Scripts/Documentation