[MlMt] serach UI improvement suggestion

[Alexandre Takacs]

Hello

I'm having a somewhat irritating problem with the search "auto starting" 
after (I believe) 3 characters being typed in, no matter what the search 
criteria is.

Unfortunately with my admittedly large mail database this can lead to 
significant "system hangs" because the search will try to locate way too 
many messages (imagine searching for "the" in all unquoted body text…) 
before I had a chance to refine it.

Unless I am missing something, obviously :)

alex