Change button color from yellow to green for all CRUD part about community-event-manager

[tdutrion]

Is there a custom theme on the project?

Should we remove the custom theme, and buttons as below:

• edit: default
• show: should not exist anywhere (link should be on the first column content I guess)
• delete (if applicable): danger
• add: primary

[tdutrion]

Colours are defined in the bootstrap template used here. What's the current btn class used here? What you say is it should be danger or warning?

My guess is that we are using btn-primary and btn-warning here, which is semantically correct IMO, I'd rather have a change in the "Add talk" button's colour.