Moving stockflow hotkeys to the bottom of the menu.

The hard-coded location is no longer appropriate for the new behavior of the linked stockpiles list.
Moving the autotrade hotkey to the bottom of the menu.

The hard-coded location is no longer appropriate for the new behavior of the linked stockpiles list.
Moving the stocks stockpile hotkey to the bottom of the menu.

The hard-coded location is no longer appropriate for the new behavior of the linked stockpiles list.
Switching new stockpile menu keys from green to red.
No longer overwrites stockpile links

The new lines added to the stockpile 'q' menu are usually drawn at the bottom, where the last few Give/Take links are written.  Now, they notice when they would overwrite one of those links, and move somewhere else.  The 'Done' line can now be overwritten by stockflow, but that hint isn't necessary for experienced players.
Merge pull request #298 from eswald/stockpile-lines

Stockpile lines