Merge pull request #84 from dr40/dev

Merge pull request #83 from dr40/ok/74/Manage_Category
Merge pull request #92 from dr40/cv/81/Main_Page_Bootstrap

Cv/81/main page bootstrap
IVVQ-Group5-Musements-74 Manage Category
IVVQ-Group5-Musements-74 Manage Category
Merge pull request #100 from dr40/ok/74/Manage_Category

Ok/74/manage category