added signout view
added squence diagram to UML folder
Pulled master and fixed conflicts
Salma commited the project files
Salma fixed doc
Salma added the UML
Salma merged conflicts
Salma fixed a line
Salma added the UML
Salma fixed UML
Pulled master, fixed conflicts
Salma added the UML
Merge branch 'master' of https://github.com/MGhanem/smartsoft-13 into c1_zoheiry_c1s9_signout
Merge pull request #152 from MGhanem/c1_zoheiry_c1s9_signout

 C1 zoheiry c1s9 signout
Salma merged conflicts
Merge pull request #158 from MGhanem/C3_SalmaFG_S07_Project

Salma commited the project files
fixed new conflicts