Issue #77 fixes documentation and code
Issue #77, Add UML

This was committed from Amina's laptop because the internet wasn't working on mine.
Merge branch 'C4_master_preview' into C4_Salah_77_dashboardstagviewing
Merge branch 'C4_Salah_77_dashboardstagviewing' of https://github.com/DevYah/coolsoft-13 into C4_Salah_77_dashboardstagviewing
Merge branch 'master' of https://github.com/DevYah/coolsoft-13
Issue #77 ready to merge
Merge branch 'master' of https://github.com/DevYah/coolsoft-13
Issue #77 merges
Merge branch 'master' of https://github.com/DevYah/coolsoft-13
Issue #77 merges with master
Merge pull request #153 from DevYah/C4_Salah_77_dashboardstagviewing

Issue #77 dashboards tag filter