Reworked the way tag lookup is done and added reverse lookup

[artemShelest]

Needed a reverse lookup of the tag short name to the tag value, so had to rework how it is handled. Stored tags into arrays, tag as a key, value as a string.

[coveralls]

Coverage increased (+5.002%) to 59.715% when pulling 7464acc on artemShelest:tagsReworked into 1ec296d on lsolesen:master.

[coveralls]

Coverage increased (+5.002%) to 59.715% when pulling 6cbacde on artemShelest:tagsReworked into 1ec296d on lsolesen:master.

[coveralls]

Coverage increased (+5.002%) to 59.715% when pulling a9ac437 on artemShelest:tagsReworked into 1ec296d on lsolesen:master.

[coveralls]

Coverage increased (+5.002%) to 59.715% when pulling 36f2ae9 on artemShelest:tagsReworked into 1ec296d on lsolesen:master.

[coveralls]

Coverage increased (+4.9%) to 59.696% when pulling d6e8b8c on artemShelest:tagsReworked into 948534e on lsolesen:master.

[coveralls]

Coverage increased (+4.9%) to 59.696% when pulling d6e8b8c on artemShelest:tagsReworked into 948534e on lsolesen:master.

[weberhofer]

Code got much better readable. Thank you for enhancements!