Improve reference file

[piafaustino]

• [x] For places with North, East, South, West in their names, add aliases in which the prefixes are abbreviated. For example: "N. Samar" should be listed as an alias for "North Samar"
• [x] Standardize style of canonical geographical names. For example, some canonical names use the convention "Barangay 5" while others use "Barangay V." Go back to the original PSGC file to use the true canonical version indicated in the original PSGC.
• [x] Keep "Poblacion","Barangay", enye, and "City" and other standard terms in full in canonical names.
• [x] For barangays and municipalities in Metro Manila, allow the search terms to totally exclude any "province" information. For example, instead of requiring: "Pasong Tamo, Quezon City, Metro Manila", consider this an exact match even for just "Pasong Tamo, Quezon City."