EXT-2062  UI of Notice accordion in the Group Profile panel is corrupted, EXT-1528 Widen groups content to match new sidebar width

Review #26

Callum found this potential bug in LLMediaEntry::asLLSD(LLSD&). It
does not erase the incoming LLSD's WHITELIST_KEY. Every other key is
overwritten in this manner, but for the WHITELIST_KEY it is just
appended. Note that this is in code common to the server...but I do
not believe at this point that there is a bug exhibited by this.

Added unit test to test for this case.

Allows Erica and co to change and localize it.
Trivial, not reviewed.

Trivial XUI mistake, not reviewed

Kill dead "web based login" viewer-auth mWebLoginKey.
Port over my reg-in-client code from svn, off by default.
Reviewed with Ambroff.

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branch : product-engine

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branch : avatar-pipeline

Implemented major sub-task EXT-2140 (Avatar icon in p2p should take all available space on Control Panel)

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branch : product-engine

fixed minor bug EXT-1618  Add Landmark does nothing if resident stands exactly in the location of existing landmark

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branch : product-engine

SLurls to the LLUrlRegistry. These are now displayed with the more
human-readable label of "Show Map for XXXX" and sport a context menu
with various operations.

I also added "Show on Map" options to the context menus for other
location-based SLurls.

I also internationalized the text for "Teleport to" and the new "Show
Map for" strings.

http://jira.secondlife.com/browse/EXT-1974
http://jira.secondlife.com/browse/EXT-1580

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branch : avatar-pipeline

EXT-2128 : remove multi-properties ability, disable from inventory menu

Also includes llsidepanelinventory cleanup.

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branch : avatar-pipeline

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branch : product-engine

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branch : product-engine