Change report on cultivation project

[bgenere]

Due to change #20 it is required to change the report.

Only one request need to be done making a join from timespent to plot_progress.

The table will present the following columns :
Date, Task, Contributor, Time spent, Plot, Plot progress.

The time spent and plot progress are summarized to get total time spend and final plot status.
Records are selected based on start and end date, task.
Selection on contributor should be added.

A feature should be added so value will not repeat when same for Date, Task, Contributor, plot

Ordering could be done by :
Date, task, contributor, plot (default) or
Task, Date, Contributor, plot or
Contributor, Date, Task, plot or
Plot, Date, Task, Contributor