STORM-2144 - Guard against null pointers when LLPanelOutfitEdit gets called before postBuild() on login.

* Opening new inventory via Control-Shift-I shortcut uses legacy and potentinally dangerous code path
* Closing new inventory windows don't release memory
* During shutdown legacy and inoperable code for inventory window cleanup is called
* Remove old and unused inventory legacy code

MAINT-6913 - (Via Sovereign Engineer and Shyotl Kuhr) Pack the skinned matrix and translation into a single mat3x4 for optimal data transfer to reduce uniform slot usage.

Prervious MAINT-2141 fix causes MAINT-6791 so reverted it

MAINT-6929 [Contribution] E-mail links are not parsed correctly when top level domain is over 6 characters.

MAINT-6665 [Contribution] Viewer crashes when setting a local texture from a path containing non-standard characters

The 'all' section must be set to the value for high end machines as the minimum of high-end and recommended setting will be applied