DEV-52870 FIX Inventory Notification not given if first Inventory Item comes from a user sharing an object or purchase from xstreet

streamlined LLUICtrlFactory's interface

DEV-52554 FIX Font color/opacity issue in About Second Life floater
DEV-52617 FIX Font color/opacity issue in Profile Panel
DEV-52618 FIX Font color/opacity issue in Covenant tab of About Land
reviewed by Monroe

Add support for an "_internal" target that forces a link to open in the embedded browser, regardless of the state of the "UseExternalBrowser" pref.

DEV-52669 FIX Inventory Notification not given if first Inventory Item comes from buying object contents

Built from:

revision aacdf69cbf5aa12d77c179296e31ef643ed1ef4a in http://qt.gitorious.org/+lindenqt/qt/lindenqt (currently head of the 'lindenqt' branch)
revision feff21029074 in http://bitbucket.org/lindenlab/llqtwebkit/ (currently head of the default branch)

added hint_popup.xml for hint styling

removed redundant functionality
moved buildPanel to LLPanel

fixed slicing problem with paramblocks where block descriptors are invalid after copying a derived block type to a base block value.

DEV-52665 FIX Inventory and Chat hints shown during login before viewer fully loads on load up screen