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).

Replaced the old icons with the ones provided by Epic.

STORM-93 FIXED Added Take Off function to the gear menu and implemented this functionality using helper methods:

canTakeOffSelected() - checking whether selected item(s) can be taken off
hasItemSelected() - checking whether any item selected
getSelectedItemsUUIDs() - returns selected items ids

STORM-91 FIXED Corrupted vertical scroll bar appears on 'Edit Outfit' panel if height of 'Add More' panel was changed

-Increased min height of panel

Incorporate code review feedback.

Corrected "follows" attribute for button in xml.

Also happens to fix STORM-96 (Empty space appears in the top of Home side panel after redocking).

Set minimum width of undocked panels to their width in sidetray (333). Minimum width was set to 440 to make sure expandable
textbox in My Profile doesn't spread out from floater if it has maximum height.

Reviewed by Vadim Savchuk.

Added a timeout so that we will only send this message a max of once a minute.
Investigated cause of server not sending visual params with texture message,
it appears it only happens if the sim cannot find the visual params to send.
Not sure what causes that condition.

Code reviewed by Seraph