[ImgBot] Optimize images

*Total -- 3,606.33kb -> 3,537.66kb (1.9%)

/store/icon-512.png -- 7.72kb -> 4.10kb (46.9%)
/app/src/main/res/drawable-nodpi/widget_preview_today.png -- 17.69kb -> 13.28kb (24.94%)
/app/src/main/res/drawable-nodpi/widget_preview_week.png -- 25.17kb -> 19.59kb (22.17%)
/store/feature-graphic.png -- 68.31kb -> 57.36kb (16.03%)
/store/feature-graphic-de.png -- 69.66kb -> 58.83kb (15.55%)
/store/screenshots/phone/08-customers.png -- 217.00kb -> 213.53kb (1.6%)
/store/screenshots/tablet10/02-orders-detail.png -- 349.30kb -> 343.71kb (1.6%)
/store/screenshots/phone/04-order-detail.png -- 196.20kb -> 193.16kb (1.55%)
/store/screenshots/phone/03-orders.png -- 255.32kb -> 251.85kb (1.36%)
/store/screenshots/phone/02-analytics.png -- 208.84kb -> 206.05kb (1.33%)
/store/screenshots/phone/07-promotions.png -- 202.88kb -> 200.29kb (1.28%)
/store/screenshots/phone/01-dashboard.png -- 236.64kb -> 233.73kb (1.23%)
/store/screenshots/phone/06-reviews.png -- 260.95kb -> 258.07kb (1.1%)
/store/screenshots/tablet10/03-reports.png -- 250.66kb -> 248.10kb (1.02%)
/store/screenshots/phone/05-product.png -- 284.38kb -> 282.87kb (0.53%)
/store/screenshots/tablet10/01-dashboard.png -- 314.75kb -> 313.50kb (0.39%)
/store/screenshots/tablet7/03-order-detail.png -- 285.85kb -> 285.27kb (0.2%)
/store/screenshots/tablet7/02-orders.png -- 355.02kb -> 354.37kb (0.18%)

Signed-off-by: ImgBotApp <ImgBotHelp@gmail.com>

Author: ImgBotApp