Adding some tank properties
Modify properties to enum type to Tank object
hudge commit
hudge commit
Merge branch 'develop' into feature/add_properties_to_tank

Conflicts:
	.gitignore
	pom.xml
Add gaz to tank detail
Update form of tank. Todo : Date field.
Updated form to handle date field
Update comments on Tank.java
Merge branch 'feature/add_properties_to_tank' into develop