Nest the fieldolver grid init timer properly

[alhom]

... to get from

 | 4   | 3   |     |     open logFile & diagnostic                                        | 1       | 0.001844  | 0.001068  | 45.19     | 1  |     
 | 5   | 3   |     |     Init project                                                     | 1       | 4.587e-07 | 2.657e-07 | 28.32     | 1  |
 | 6   | 3   |     |     Init fieldsolver grids                                           | 1       | 151.5     | 87.73     | 0.0002724 | 1  |      
 | 7   | 4   |     |       Init grids                                                     | 1       | 151.5     | 100       | 0.0002618 | 1  |
 | 8   | 5   |     |         Initialize DCCRG grid                                        | 1       | 20.93     | 13.82     | 4.808     | 1  |      
 | 9   | 5   |     |         Refine spatial cells                                         | 1       | 40.53     | 26.76     | 4.829     | 1  |

to

 | 5   | 3   |     |     Init project                                                   | 1      | 3.67e-07  | 5.281e-07 | 16.4      | 1  |        
 | 6   | 3   |     |     Init grids                                                     | 1      | 56.5      | 81.31     | 0.0003612 | 1  |
 | 7   | 4   |     |       Init fieldsolver grids                                       | 2      | 0.001073  | 0.001898  | 17.46     | 1  |         
 | 8   | 4   |     |       Initialize DCCRG grid                                        | 1      | 8.288     | 14.67     | 4.08      | 1  |
 | 9   | 4   |     |       Refine spatial cells                                         | 1      | 14.76     | 26.11     | 4.646     | 1  |          
 | 10  | 5   |     |         Magnetosphere: refine spatial cells                        | 1      | 4.474     | 30.32     | 35.42     | 1  |