- internal : RlvAttachmentLockWatchdog::attach() uses RezSingleAttachmentFromInv directly
    -> check whether http://jira.secondlife.com/browse/SVC-5383 is still an issue

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This problem reproduced not only on minimize of certain floaters from description, but for all expandable textboxes after resizes.
It happened because of hideExpandText() call in LLTextBoxEx::reshape() that broke lineendings.

- Removed it from there so text expands now only when clicking "More" link- it's the only time when it should be shown, and
also doesn't have problem with breaking anything because of calling setTextBase() after it.

Vertical scroll bar appears when reduced panel height becomes insufficient for displaying all controls.

STORM-101 FIXED Moved floater settings (rect, visibility, docked state) to account-specific XML file.

The settings are now stored to settings_per_account.xml.
This change affects all floaters having save_rect/save_visibility/save_dock_state params set to "true",
not just detached sidebar tabs as the ticket requests.

- Added argument show_images to constructors of LLIMToastNotifyPanel and LLToastNotifyPanel. Depending on it plaintext attribute for textbox with notification text is set. Used this argument when adding notification to chat history if IM is in plaintext mode.

Removed unused "mask" arguments from three sidetray methods.

Cursor didn't change to "resize" state, because handlehover of bottomtray wasn't working correctly. It happened
because LLPanel::handleHover() wasn't called in LLBottomtray::handleHover().

- There was no good reason to override habdleHover() in LLBottomTray so new method onDraggableButtonHover() was introduced to be called
from bottomtray buttons(as it was already done for mouse up and down).

STORM-99 FIXED Fixed wrong name of item shown in confirmation popup when sharing items from undocked sidetray inventory.

I couldn't repro situation when select was disabled, but problem with wrong items reproduced for me all the time.
It happened because all detached tab floaters were getting name "floater", so couldn't be found by sidetray's getPanel(),
and even if inventory could be found is_inventorysp_active() in LLInventoryPanel::getActiveInventoryPanel() would not let us
reach point of getting it.

- Added setting name of floater to sidebar tab's name on it's detach.

- Added search of detached inventory tab to LLInventoryPanel::getActiveInventoryPanel() and if it is detached, inventory panel
is found there, and z-order of floater is stored and later compared with z-orders of "inventory" floaters(the ones that are opened
via Ctrl+Shift+I).

- fixed : "Build" button on the bottom tray should visually disable when both @edit=n and @rez=n restricted (thankies Chloe)
    -> see http://redmine.catznip.com/issues/2
- fixed : "Build" menu option under "Build" should visually disable when both @edit=n and @rez=n restricted

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Replaced the old icons with the ones provided by Epic.