perf: Optimize images (#12)

*Total -- 648.71kb -> 634.15kb (2.24%)

/static/rest_framework/img/grid.png -- 1.42kb -> 0.98kb (31.28%)
/static/rest_framework/img/grid.a4b938cf382b.png -- 1.42kb -> 0.98kb (31.28%)
/static/rest_framework/docs/img/grid.a4b938cf382b.png -- 1.42kb -> 0.98kb (31.28%)
/static/rest_framework/docs/img/grid.png -- 1.42kb -> 0.98kb (31.28%)
/static/drf-yasg/redoc/redoc-logo.c7dc7712ce68.png -- 4.85kb -> 4.38kb (9.74%)
/static/drf-yasg/redoc/redoc-logo.png -- 4.85kb -> 4.38kb (9.74%)
/static/admin/img/sorting-icons.svg -- 1.07kb -> 0.98kb (8.39%)
/static/admin/img/sorting-icons.3a097b59f104.svg -- 1.07kb -> 0.98kb (8.39%)
/static/admin/img/calendar-icons.svg -- 1.07kb -> 1.00kb (6.4%)
/static/admin/img/calendar-icons.39b290681a8b.svg -- 1.07kb -> 1.00kb (6.4%)
/static/admin/img/selector-icons.svg -- 3.21kb -> 3.04kb (5.35%)
/static/admin/img/selector-icons.b4555096cea2.svg -- 3.21kb -> 3.04kb (5.35%)
/static/admin/img/icon-clock.svg -- 0.66kb -> 0.63kb (5.32%)
/static/admin/img/icon-clock.e1d4dfac3f2b.svg -- 0.66kb -> 0.63kb (5.32%)
/static/admin/img/icon-calendar.ac7aea671bea.svg -- 1.06kb -> 1.03kb (3.31%)
/static/admin/img/icon-calendar.svg -- 1.06kb -> 1.03kb (3.31%)
/static/admin/img/tooltag-arrowright.svg -- 0.27kb -> 0.27kb (2.86%)
/static/admin/img/tooltag-arrowright.bbfb788a849e.svg -- 0.27kb -> 0.27kb (2.86%)
/static/admin/img/tooltag-add.e59d620a9742.svg -- 0.32kb -> 0.32kb (2.42%)
/static/admin/img/tooltag-add.svg -- 0.32kb -> 0.32kb (2.42%)
/static/rest_framework/fonts/glyphicons-halflings-regular.08eda92397ae.svg -- 106.19kb -> 103.92kb (2.14%)
/static/rest_framework/fonts/glyphicons-halflings-regular.svg -- 106.19kb -> 103.92kb (2.14%)
/static/admin/img/search.svg -- 0.45kb -> 0.44kb (1.75%)
/static/admin/img/search.7cf54ff789c6.svg -- 0.45kb -> 0.44kb (1.75%)
/static/rest_framework/fonts/fontawesome-webfont.svg -- 197.41kb -> 194.25kb (1.6%)
/static/rest_framework/fonts/fontawesome-webfont.83e37a11f9d7.svg -- 197.41kb -> 194.25kb (1.6%)
/static/admin/img/icon-addlink.svg -- 0.32kb -> 0.32kb (1.51%)
/static/admin/img/icon-addlink.d519b3bab011.svg -- 0.32kb -> 0.32kb (1.51%)
/static/admin/img/inline-delete.fec1b761f254.svg -- 0.55kb -> 0.54kb (1.43%)
/static/admin/img/inline-delete.svg -- 0.55kb -> 0.54kb (1.43%)
/static/admin/img/icon-changelink.svg -- 0.37kb -> 0.37kb (1.32%)
/static/admin/img/icon-changelink.18d2fd706348.svg -- 0.37kb -> 0.37kb (1.32%)
/static/admin/img/icon-deletelink.564ef9dc3854.svg -- 0.38kb -> 0.38kb (1.28%)
/static/admin/img/icon-deletelink.svg -- 0.38kb -> 0.38kb (1.28%)
/static/admin/img/icon-unknown.a18cb4398978.svg -- 0.64kb -> 0.63kb (1.22%)
/static/admin/img/icon-unknown.svg -- 0.64kb -> 0.63kb (1.22%)
/static/admin/img/icon-unknown-alt.81536e128bb6.svg -- 0.64kb -> 0.63kb (1.22%)
/static/admin/img/icon-unknown-alt.svg -- 0.64kb -> 0.63kb (1.22%)
/static/admin/img/icon-yes.d2f9f035226a.svg -- 0.43kb -> 0.42kb (1.15%)
/static/admin/img/icon-yes.svg -- 0.43kb -> 0.42kb (1.15%)
/static/admin/img/icon-alert.svg -- 0.49kb -> 0.49kb (0.99%)
/static/admin/img/icon-alert.034cc7d8a67f.svg -- 0.49kb -> 0.49kb (0.99%)
/static/admin/img/icon-no.svg -- 0.55kb -> 0.54kb (0.89%)
/static/admin/img/icon-no.439e821418cd.svg -- 0.55kb -> 0.54kb (0.89%)
/static/admin/img/icon-viewlink.svg -- 0.57kb -> 0.56kb (0.86%)
/static/admin/img/icon-viewlink.41eb31f7826e.svg -- 0.57kb -> 0.56kb (0.86%)

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