ui: replaced confusing Voice settings labels, fixes #226
ui: updated tooltips of Game and View options

This adds missing tooltips, and uniformizes the various labels.
ui: updated r_mode 12 label to 1366x768, ref #110

The r_mode 12 value has been changed from 1360x768 to 1366x768.
Merge pull request #37 from Spyhawk/mycode

ui: various minor fixes