Place all info/success messages in flash

[victorbrender]

Use https://www.npmjs.com/package/express-flash
@chill117 Can you confirm that this package should be used to implement flash in the application? Thank you!

[chill117]

@victorbrender No, I wouldn't use that module because it hasn't been maintained for 3 years. Flash messages are actually pretty simple. I don't think it would be too difficult to implement this without a module.

[bokova]

@chill117 "Place all info..." - would help if the task was more specific as to what exactly should be in a flash message

[victorbrender]

Flash messages proposal:

• After login -> You have successfully logged in as 'Stan Marsh'
• After logout -> You have successfully logged out
• After successfully creating a project -> You have successfully created project 'Acme'
• After successfully editing a project -> Project 'Acme' was successfully updated
• After an error while editing a project -> There was an error while updating project 'Acme'
• After deleting a project -> Project 'Acme' was deleted
• After successfully editing your profile -> Your profile was successfully updated
• After an error while editing your profile -> There was an error while updating your profile