[git] Converted gif from lfs to git.

.gitattributes

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...component/gif/DiffusionAndStorageAndAdvectionAndDecay.gif

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.../gif/DiffusionAndStorageAndAdvectionAndDispersionHalf.gif

...nt/gif/DiffusionAndStorageAndGravityAndDispersionHalf.gif

web/content/docs/benchmarks/hydro-component/gif/elder.gif

web/content/docs/benchmarks/hydro-component/gif/goswami.gif

...port/kineticreactant_allascomponents/KineticReactant2.gif

...docs/benchmarks/reactive-transport/wetland/Wetland_1d.gif