Preserve the image transform#489

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ibesora wants to merge 5 commits intolokesh:masterfrom

ibesora:transforms

Commits on Nov 24, 2015

Preserves the image transform
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Commits on Nov 25, 2015

Preserves the image transform even if the image is hidden when the album is created
ibesora
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Computes the new width and height of the transformated image to correctly set the preloader bounding box
ibesora
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Commits on Nov 26, 2015

Added a translation to recenter the image after it has been rotated
ibesora
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Commits on Jan 17, 2016

Corrected a bug that happened when the image had an identity matrix as a transform
ibesora
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