Implemeted normal Sub-task EXT - 2753 (Implement Avatar icons on IM multifloater tabs). Some code needs improvements(refactoring, optimization)

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Fixed major regression bug EXT-4503 (Clicking on parcel limitation icons does not give description).
Although there are tooltips on the icons...

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Fixed major bug EXT-4130 ([BSI] "Only friends and groups can call or IM me" needs better label OR is buggy).
Viewer now handles incoming inventory offers disregarding the setting.

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- Fixed buttons location in people, profile, picks, notes panels to enable handling clicks on the whole button surface.

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Landmarks panel after closing Create Landmark panel
- Added selecting landmark in landmarks panel after it was added or edited.
- Added expanding accordion tab containing the selected landmark.

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fix for normal EXT-4035 Old sidepanel tab's text remains highlighted when switching to inventory sidepanel tab

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Removed changes made in changeset 7982:97391caf89c3 (fixes EXT-4465(UI issue with scroll-bar in Voice Control panel)).
It is not needed anymore because auto resizing was removed.

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Also encreased floater minimum height to show one participant(this fixes ghost scrollbar)

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fix normal EXT-4494 [BSI] Group Chat and Group Call buttons are shown even when you are not in the group

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move disconnect rendering into render_ui
code reviewed by davep

(more accurately, it was - I believe - reading over the end of a buffer in the pick-mask lookup)

reviewed by qarl.

(approved by Richard)

This build is based on:

Commit 16264ea12f1320e25f3d4fad3a9ddd4d3f8d2e68 of http://qt.gitorious.org/~girish/qt/girishs-qt/commits/lindenqt

Revision 24ce3025f844 of https://hg.lindenlab.com/monroe/llqtwebkit-4.6/

Review #83
The function LLMediaEntry::checkCandidateURL() assumes the URL passed
in at least has a scheme part (i.e. a ":"). This fixes the bounceBack
code to assure that.

Reducing include dependence from the "llspeakers.h" through "llimview.h" (following by the 7d600b529ee8 commit)

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