TagMechanic v0.4.4

Mostly cosmetic changes and the consolidation of tons redundant code--all of which makes it easier to maintain and add new tags.

Changes include:

1. made the configuration dialog dynamically multi-column so it still fits on lower-resolution screens.

2. added some more common html5 tags to the list of available tags.

3. fixed a bug that would butcher html comments under certain conditions.