Improve performance

[F0urchette]

Description

As a user I want the application to be fast and low on memory usage So that I have a better user experience But I don't know the best practices for improving performance yet

Hints

The points that seem to be the most relevant to be improved are :

• when retrieving informations from Github (network)
• change detection (Angular)
• maybe think about making modules and lazy loading (memory)
• DOM manipulations
• a better use of fork for the Github API requests
• a better management of ChartJS (such as avoiding to destroy and reload all data in the graph)

[F0urchette]

For now, the approach is to resolve performance issues as they appear. This is not currently the case