The commit is a preparation to access GeoObject objects via the geometry
name and the object name (patch name).

Also remove the header StringTools.h everywhere.
Add a previously missing sstream include in DateTools.cpp.

This is required for an upcoming application.
It was already discussed in #89 and will come up
with more changes as the application grows. So
step by step all #includes will have the full
paths prepended.

http://www.viva64.com/en/d/0278/print/

There is no sense in testing the pointer against null, as the memory was allocated using the 'new' operator.

http://www.viva64.com/en/d/0293/print/

http://www.viva64.com/en/d/0146/print/

http://www.viva64.com/en/d/0303/print/

http://www.viva64.com/en/d/0165/print/

http://www.viva64.com/en/d/0274/print/

Using pre increment to omit a copy.

Using the tol (tolerance) variable makes the code more readable.

The until now implementation is not correct. Using
Polygon::isPolylineInPolygon(), which is tested already.

Method will be used later on to check if a polyline is within the polygon.

Conflicts:
	GeoLib/AnalyticalGeometry.cpp

Renamed and slightly modified algorithm to make it more readable.

Impl. a new algorithm for checking if a point is within a triangle and removed old sources for this task.

std::list::erase pre C++11 implementation does not take a const iterator. This commit can be reverted if Travis uses a newer version of gcc.