/resources/scss/ & /views/back-office/pages/: added new .control classes for back-office specific inputs and updated login page with it
/resources/ & /views/back-office/pages/articles/: made article creation usable (tags now work, still no visual editor)
/controllers/, /resources/ & /views/back-office/pages/articles/: added auto-save and technical name generation to back-office article and fixed a few bugs (alerts position on back-office and confirm box closing)