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Full stats implemented
Buttons & Apostrophes
Added Javasript Libs + Categories + Correction of bugs
Bug fixed

- Grafico si aggiorna ogni volta anche se la scala rimane la stessa —>
Fixed
- La categoria scelta deve essere colorata di giallo (non verde). —>
Fixed
- Dopo la correzione colorarla di verde se giusta o di rosso se
sbagliata. —> Fixed
minor improvements of teacher dashboard

added button for the right answers
Merge pull request #50 from johnnymoretti/master

Teacher dashboard improved with full stats graph + encoding issue patched
Merge branch 'backend-dev'
changed jquery local name
Merge pull request #52 from erpreciso/backend-dev

solved bug of server error when logging with student name already in
deployed v8a