Reduced DB calls to only when image is first created, added Quality setting for ImageMagick#5

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styledev wants to merge 2 commits intoMatthewRuddy:masterfrom Parapxl:master

+318-339

Commits on Feb 18, 2013

Moved the DB query check into file_exists so that we are not constantly hitting the DB when the image already exists. Also added $quality attribute for ImageMagick version.
styledev
committed

Commits on Feb 26, 2013

Added in Positional Cropping (e.g. '0,100' or t, tr, tl, b, br, bl, l, r)
styledev
committed