[Guideline] Buttons colors

To follow the guidelines, and the Edition/validation processes (first blue on edition/first level validation actions, then green on final validation in one action), Add (user/semantic type/preparation/Dataset, etc.) buttons should be blue and not green.

See guidelines : http://guidelines.talend.com/document/92132#/ui-controls/buttons

As seen with mloussot :

• Onboarding :

• next: green
• skip: grey
• back: grey
• let me try: green

• Add dataset: blue
• App preparation: blue
• Export PE&EE: green (to stay consistent with other products)
• Submit action: green
• Edit action: green
• Dataset parameters: green
• Lookup (first Confirm button): green
• Lookup (second Add button): green
• Manage versions: grey
• Add version: grey
• Submit version: green
• About (More & Less): grey
• Add folder (OK): green
• TCOMP modal:

• Test connection: blue
• Add dataset: green

• Delete:

• Yes: green
• No: grey

• Share:

• Add: blue
• Confirm: green

• Save: green
• XLS sheet chooser (Confirm): green
• Send feeback (Ok): green
• Find and group similar text modal (Submit): green