Zoom in/out and smart zoom on double tap when in single image mode

[ehsan6sha]

When a single image is opened in the modal the following should be do-able: 1- on double tap, image should be zoomed in with the center of the location user tapped 2- user should be able to zoom in and move around on the zoomed image Affected files:

• ./components/RenderPhoto
• ./components/PhotoChunk

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