Fixes the case, when waste is never greater then the worst case and seeds assignment does not occur.

   pass into an HTML rendering panel and otherwise look goofey.
*) Implement BOARD::Move() can call it from EAGLE_PLUGIN::Load().
*) When USE_FP_LIB_TABLE, tolerate blank nicknames in FPIDs coming from eeschema.
   See the switch for this in pcbnew/netlist.cpp as ALLOW_PARTIAL_FPID.
*) Add an assert and a try catch block to figure out that View does not
   like some eagle pcb board.  bitset::set() is getting a -1 value and firing
   an exception.

template<> -> template <>
Some more reformatting according to uncrustify results.

Added typedefs for VIEW_GROUP iterators. Fixed improper order of layer drawing for VIEW_GROUP items.

VIEW_GROUP now does not change depth during drawing. Introduced functions for manipulating stored items.
FIxed problem of overlay being covered by other layers while panning.
Few minor fixes.

Removed TA_ActivateTool (now tools are invoked by sending TA_Action event, with the tool name as string parameter).
Developed TOOL_Action class & added ActionManager. Hot keys registered by tools are processed.
Selection & move tool can be invoked by a hot key.

Changed VIEW::PrepareTargets() to more appropriate name VIEW::ClearTargets(). Added SELECTION layer to always-on-top list.

Redraws can be requested way too often than it is required. This commit adds redraw timeout:
- if the view became dirty and there has been no redraw for longer than certain time, it is redrawed immediately
- otherwise, we wait for the next frame

This in general improves smoothness of rendering.

More effective way of updating bounding boxes. IsCached() method made public. Removed some of unused fields from the layer description structure.

VIEW_ITEMs save the layer numbers they use, it allowed to speed up removal of items.

Added flipping mode.