SH-412 -- fix the way that redraws happen to eliminate flickering on resize -- patch from davep and seraph, I'm just applying it.

STORM-535 FIXED PLEASE allow adjustable transparency of "Nearby Chat" window, Chat History and Chat "Toasts" in Viewer 2.0!

- Added to the settings.xml values of transparency for active and inactive floaters

- Added three members to the LLFloater. These members store current transparency of floater, transparency of active and inactive floaters.

- Added callbacks that update transparency value of active and inactive floater. Also in these callbacks value of current floater transparency updated.

- In panel preferences advanced added two spinners: transparency of active floaters and inactive ones. See screenshot.

fixed logic so that ignore consistently means *don't show* the notification
the ignore settings still store "show the notification if true" values

STORM-105 : takes Vadim's comments into account, clean up use of static globals and magic strings, enforce naming conventions

reverted to old sense where ignore setting of notifications has meaning true=show false=ignore
reviewed by Callum

STORM-284 FIXED Disabled "+" sign when user tries to drop a landmark to Favorites bar from any location besides My Inventory or Library.

* Bump CacheNumberOfRegionsForObjects up to 20k in the default settings.
* Make LLVOCache *actually* use this setting, with no upper bound.

Reviewed with Kelly.

- Added checking whether panel is in visible chain instead of just visibility checking

- Changed text_readonly_color in script editor to darker gray, so that line numbers are visible when scrip editor is out of focus.

STORM-194 FIXED 'Show' button in inventory offer notification to open 'My Inventory' SP if attachments were offered.
Removed the check preventing inventory SP from opening when an item of IT_ATTACHMENT type has been offered.

STORM-536 ADDITIONAL FIX Replaced extra calls to getChild() with using a member pointer to LLAccordionCtrlTabHeader.

STORM-536 FIXED scrolling to collapsed accordion tab with keyboard arrows in Places SP->My Landmarks.
- Fixed scrolling to selected item when a folder view receives selection inside an accordion tab while being out of visible scrolling area.
- Fixed scrolling to collapsed accordion tab when it receives selection while being out of visible scrolling area.

In case of files provided in ticket problem occured in libjpeg's jpeg_start_decompress(to be more specofic- inside it's _jinit_color_deconverter()) because if cinfo's out_color_space is RGB, then jpeg_color_space can't be JCS_YCCK (JCS_YCCK jpeg_color_space is possible for JCS_CMYK out_color_space). So when the combination of RGB and JCS_YCCK was encountered, jpeglib called ERREXIT() inside which exit() was called and viewer crashed.

- Checking for this combination before calling jpeg_start_decompress() would solve this problem in this specific case, but there are a lot of possible error combinations which cause libjpeg to exit and thus crash viewer, so copypasting checks from it into viewer code would be cumbersome, uneffective and ugly. So another approach was used instead- by default libjpeg calls exit() after encountering an error, but user can provide his own error handling function instead. on_jpeg_error() function was added in fix for this. It sets true a boolean flag that is used to determine whether there were errors in getImageDimensionsJpeg(), and this function's return value depends on it.

This is a patch originally written by Robin Cornelius.
I made it work with Google Breakpad.