The type of a email address should be case-insensitive.

Test vcard:
BEGIN:VCARD
VERSION:4.0
EMAIL;TYPE=home:test@example.com
FN:Text Example
N:Example;Text;;;
END:VCARD

Reproducible: Always

Steps to Reproduce:
1. Import the vcard above
2. Open the imported contact
3. The drop down menu of the email address displays "Select..." instead of Home.
4. Selcet "Home"
5. Ok (Save)
6. Export the vcard (4)
5. In the export now is: "EMAIL;TYPE=home,HOME:test@example.com"

Actual Results:  
Type is case-sensitive.

Expected Results:  
Type is case-insensitive.