Add excel export to maintasks index
Add obs to Maintask and fixed views
Removed assigned_to and maintenence_period to Equipment and fixed views
Add devise for user authentication. Add username to Users
Extracted some render forms of equipment views
Extracted some interventions render forms
Extracted some maintasks render forms and corrected style of some views
Add name and plant to users
Customized user views
Created Plants scaffold and add associations.
remove notice from all views
Add plants select collection to users
Add plant_id (throuth user.plant) when creating new equipment
Changed Equipment validation. Add back btn to all to render forms
Changed equipment index to show only own plant equipments