Blind & Dazzle fix

There is a widespread cheat to ignore the visual component of these
flagship spells. This commit therefore largely eliminates those effects,
reducing the visual components to one second (retained as a way to
succinctly inform players they have been cast upon).

This necessitated a few text changes in dazzle, re-explaining the dazzle
effect as a pacification effect due to Shal'ille's light.

Blind was more complicated. I renamed it "Bind" and increased the
stumbling effect from 30% to 70% to compensate for the loss of blinding.
The new lore explanation is that it burns the target's muscles, in keeping
with Qor's bodily disablement theme. This should affect the movement of normal players and cheaters alike in
the manner blind was originally intended to. The spell still prevents the use of doors.

These lore edits keep the spells properly themed while removing the see-through-blind cheat entirely and actually enhancing Blind's effects. In testing, the 70% chance to change direction every second (while moving) is highly disorienting - and if cheaters do manage to bypass the effect, it will be **very** obvious, unlike the current see-through bypass, which is totally unobservable by other players.

Definitely open to changing the stumbling effect in the future if it proves to be by-passable or unpopular. All that really matters right now is equalizing the playing field between cheaters and normal players. Normal players are completely dominated by Blind and Dazzle, while cheaters can almost ignore their effects and continue running around with full sight - and there is no simple way to enforce cheat detection otherwise.