Fix an issue with different time steps

Sometimes the division between number of steps and time step was not
giving the right results.

Nevertheless, this just indicates that the species have to be in
separated arrays so that the assignment of particles in list, pushing
and scattering can be dealt independently.

Thus, this is the first step in creating separate arrays of particles
per species.

src/modules/mesh/moduleMesh.f90

@@ -816,9 +816,8 @@ MODULE moduleMesh
 
       IF (MOD(t, everyColl) == 0) THEN
         !Collisions need to be performed in this iteration
-        !$OMP DO SCHEDULE(DYNAMIC) PRIVATE(part_i, part_j, partTemp_i, partTemp_j)
+        !$OMP DO SCHEDULE(DYNAMIC) PRIVATE(part_i, part_j, partTemp_i, partTemp_j, cell)
         DO e=1, self%numCells
-
           cell => self%cells(e)%obj
 
           !TODO: Simplify this, to many sublevels

src/modules/solver/moduleSolver.f90

@@ -123,7 +123,12 @@ MODULE moduleSolver
       END SELECT
 
       self%pushSpecies = .FALSE.
-      self%every = INT(tauSp/tau)
+      self%every = FLOOR(tauSp/tau)
+      !Correct value if not fulfilled
+      IF (tau*REAL(self%every) < tauSp) THEN
+        self%every = self%every + 1
+
+      END IF
 
     END SUBROUTINE initPusher