SH-287 FIXED Anti-aliasing setting does not take effect until relog

Added logic to control RenderUseFBO setting based on graphics quality.  RenderUseFBO controls whether anti-aliasing is enabled.

I'm not sure what the root cause of the problem was (maybe invalid initial selection in folder view),
but what seems to be definitely wrong is passing "scroll to rect" event
from *invisible* folder views up to accordion control, which is what I've fixed.

- Added signal to LLFloater that is emitted on minimize.

- Set minimize callback for appearance tab floater in LLSideTrayTab::undock. Method from LLSidePanelAppearance that handles camera issues
is called on minimization of floater.

When floater media browser is minimized its button bars are shrunk to zero height and their height is not restored upon unminimizing because they have auto_resize disabled. Setting min_height for the button bars makes them restored with this height upon uminimizing the floater.

STORM-296 FIXED Item types that can be dropped to Places SP->My Landmarks  restricted to landmarks and folders only.

- Added missing column to the xml of the scroll list

- Adjusted columns width to show all columns

- In all places of sidebar panel where gear menu button is used changed type of gear menu buttons from LLButton to LLMenuButton

- Added setMenuPosition and setMenu to the LLMenuButton interface as public methods

- In all sidebar panels where LLButton was replaced with LLMenuButton the algorithm of replacing is simple and the same for all sidebar panels.
  In general the algorithm is:
    1. set gearMenu to the menuButton using LLMenuButton::setMenu
    2. set mouse down callback for the menuButton
    3. in callback for mouse down set the menu position where it should be shown using LLMenuButton::setMenuPosition

make ctrl-f work from the script search box itself.

change to better / more consistent naming

let some LLViews handle shortcut keys if they want.
reviewed with ambroff

-Increased space between bottom of the floater and bottom of the web browser (inside floater), so that 'Loading / Done' text
 between bottom of the web browser and bottom of the floater won't be cropped

- Increased overall floater width.
- Increased permissions columns width.
- Increased 'Check All' and 'Clear' buttons width.
- Applied text wrapping to permissions labels.
- Removed 'NextOwnerLabel' dimensions overrides for German.
- Removed 'Check All' and 'Clear' buttons dimensions overrides for Polish.

fix for SH-173/VWR-22868: Development Viewer freezes just after startup / greedy with file handles / 'WARNING: ll_apr_warn_status: APR: Too many open files'
(transplanted from a9aefa70c029eb9dddec3833d0ce22ef4b4421b5)

- Some checkboxes moved in DE locale and EN xml file.
- Removed floater width override for ES locale.

Submitting on behalf of Thickbrick Sleaford.

One of the LLSelectNode constructors has a leak where it does "new LLPermisions()" twice, thus leaking the address of the first object created.

This constructor is called every time you interact (click, hover, select, possibly other) with an object, once for each prim in the object. Since sizeof(LLPermissions) is 92 bytes, this can be a significant amount after a while.

I think this might explain VWR-18528 (leaking LLpemissions instances), at least partially.

This was fixed in snowglobe 1.x as part of SNOW-267.