Add pivotable reporting about pyoupyou HOT 2 CLOSED

Based on what has been presented at the last enioka's seminar, we would need :

• Stacked bar chart - x: year-month ; y: process state by firm entity (subsidiary)
• Stacked bar chart - x: firm entity (subsidiary) ; y : source
• Bar chart - x: years and firm entity (subsidiary) ; y: number of candidates from hiring firms
• Bar chart - x: years and firm entity (subsidiary) ; y: percentage of of candidates from hiring firms
• Table chart - x: process state (with total and recruitment percentage) ; y: year with hiring firms or other
• Stacked bar chart - x: number of interview (yearly filtered) ; y : contract type
• Stacked bar chart - x: Average duration in day of a process (yearly filtered) ; y : contract type
• Stacked bar chart - x: Average duration in day between interviews per firm entity (yearly filtered) ; y : contract type
• Bar chart - x: Candidate per firm entity labeled with contract type ; y: Number of interviews

from pyoupyou.

Data to be removed :

• Candidate name
• Process state (keep only the process label)
• Interview state -> change to "interview state label"

Set start date of the year in settings file.
Group data by years using the above start date.

from pyoupyou.