SL-103 WIP - viewer enforces wearable limits based on total articles of clothing rather than per-type limit. Limit is artificially low for testing, will bump before release.

 - memory leaks fixing;

 - memory leaks fixing;

replace llinfos, lldebugs, etc with new LL_INFOS(), LL_DEBUGS(), etc.

SH-4035: Hooked up logic to handle 'me->appearance'. Refactored out some commonly used code in llfloatersidepanelcontainer

renamed LLView::handleVisibilityChange to onVisibilityChange to reflect
standard naming conventions for handlers vs. reactors

SH-4035: Removed prompt to save if av just has outfit changes. Hooked up logic to handle ctrl+w and ctrl+shift+w confirmation prompts

Backing out MAINT-1099 fix. Added line causes us to temporarily exit and re-enter
outfit editing mode every time we edit a wearable, which has a host of unintended
consequences. Reviewed the original bug, and their fix should not have any
impact on the original bug.

Repro of the original bug does not repro, with or without the patch. The patch
causes regressions but not fixes so removing it. Will send MAINT-1099 back
to QA for verification - there is an alternate solution if this causes a regression.

UI was incorrectly assuming that saving a wearable meant that the outfit
did not need to be saved as well. Updated panel switching to actually
check whether the outfit matches the base outfit.

SH-3632:Undo change is now disabled after you save and return to the edit out fit panel (this behavior is now make sunshine-internal consistent with 3.4.1)