Phone number not sanitized/validated

[Jelmer van der Linde]

When you change your phone number, it will be send 'raw' to Secretary instead of stripped from stuff. Secretary will partially strip stuff, but not non-unicode. Besides, until it is 'confirmed' in Secrterary the unsanitized stuff will be displayed on the Cover site.

[Jelmer van der Linde]

Parse, sanitize and validate phone numbers. Also make phone numbers clickable in the profile using the tel: protocol handler. This adds a new composer dependency, namely libphonenumber (based on Google's libphonenumber). This also fixes issue #63.

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