Rui questions

• Java set DateFormat timezone to GMT+1
• Customize HTML <select> with CSS [duplicate]
• iOS 7 CoreLocation: region monitoring fails on the first time after location services are authorised
• Swift package manager unable to compile ncurses installed through Homebrew
• How to vertical-center Twitter Bootstrap 3 modal?
• Ruby on Rails: how to migrate changes made on models?
• org.xml.sax.SAXParseException: Document is invalid: no grammar found.
• iOS auto-renewable subscriptions: receipt validation flows
• Check if file exists on remote server using its URL [duplicate]
• Twitter Bootstrap 3: how to use media queries?

Rui answers