triangle array was redundant

If node has too many neighbours in check_delaunay, a new subroutine
retrinagulate_surface tries to redo the triangulation before aborting.

Using the same algorithm as in move_cloud.f90

Only longest edge in one triangle is split.
If two edges of the same length exist in one triangle, the one with the
lower edge index is split.
If an edge is split no other edge in the adjacent triangles may be
split.

find_leaf crashes if particle lies outside domain too far.

For no advection through z=0-plane

Temperature is initialized by assuming all surfaces are more or less
flat and sp01 defines the base elevation. Temperature is then calculated
as a steady state solution with T=0 at bottom and T=1 at ztemp.

Conflicts:
	src/update_gitversion.sh

Thermochron Ages are calculated in a self-scheduling manner. Write
output moved to subroutine. Output only in *.vtk

Self-Scheduling Model for multiple processors.

Upon restarting, the restart file is only read by Master process and
then broadcasted to other processes.

Also doing some source code formatting.

Tracking output can be written in regular intervals instead of every
timestep.
Output directory for post-track can be specified in input parameter
file.
Warning added for tracking cloud to be activated after spinup.

Post processor for tracking output files. It produces vtk files for
regular spced output timesteps of either all or only surfaced tracks.
It works with regularly spaced input files.
Output variables are: Speed, vertical speed, temperature, pressure,
time, step number and particle/track ID. Variables and positions are
written either in DOUAR units or natural units.

Write only floats to output file.
In post-processing, write tracks only up to output timestep.

working: convert_trfile for converting a binary output file to ascii
not working: post_tracking creates faulty vtk files
debugging: Log file must be only opened once

Checking consinstency of level values in input file, warning or aborting
if error is found

log.txt moved from DoRuRe to DOUAR
position of node with too many neighbours gets printed out for better
debugging.
module_gitversion is compiled immediately in version update for correct
integration

Removing directory name choice, proper distribution of parameters to all processes.

Adjusting to new tracking cloud organisation and the additional
parameters.

Including git version output into tracking branch.

Tracking cloud particles are allocated, created, values interpolated, saved,
moved and reset. Information required for restart is saved in standard output
file, track logs in other directory.
No post-processing of output files is done yet.

working similar to svn version update

Since the refined octree is needed for the reinjection, the first
creation of the tracking cloud belongs there.

Save history on disk in separate directory
Update fields,write and move cloud all in one file