[web] Fix binary files not commited with git-lfs.

web/content/docs/benchmarks/phase-field/Miao_Biot2017.pdf

web/content/docs/benchmarks/phase-field/beam.png

web/content/docs/benchmarks/phase-field/beam_d.png

web/content/docs/benchmarks/phase-field/beam_u.png

web/content/docs/benchmarks/phase-field/error_u.png

...arks/small-deformations/Pressure_BC/pipe_axisymmetric.png

...arks/small-deformations/Pressure_BC/pipe_plane_strain.png

...benchmarks/small-deformations/Pressure_BC/pressure_bc.pdf

...rks/small-deformations/Pressure_BC/report_pressure_bc.pdf

...s/benchmarks/small-deformations/Pressure_BC/sphere_3d.png

...ks/small-deformations/Pressure_BC/sphere_axisymmetric.png

...small-deformations/Pressure_BC/sphere_axisymmetric_pl.png

...ns/Pressure_BC/sphere_axisymmetric_pl_residual_stress.png

web/content/docs/benchmarks/thermo-mechanics/stress.png

web/content/docs/benchmarks/thermo-mechanics/temperature.png