[ImgBot] Optimize images

*Total -- 686.97kb -> 637.66kb (7.18%)

/forum/adm/images/spacer.gif -- 0.79kb -> 0.04kb (94.67%)
/forum/adm/images/cellpic3.gif -- 0.81kb -> 0.14kb (82.57%)
/forum/styles/prosilver/theme/images/sticky_unread.gif -- 3.12kb -> 2.08kb (33.16%)
/forum/styles/prosilver/theme/images/sticky_read.gif -- 3.12kb -> 2.09kb (33.08%)
/forum/styles/prosilver/theme/images/sticky_read_mine.gif -- 3.17kb -> 2.13kb (32.64%)
/forum/styles/prosilver/theme/images/sticky_unread_locked.gif -- 3.17kb -> 2.14kb (32.59%)
/forum/styles/prosilver/theme/images/sticky_read_locked.gif -- 3.17kb -> 2.14kb (32.57%)
/forum/styles/prosilver/theme/images/sticky_unread_mine.gif -- 3.20kb -> 2.17kb (32.31%)
/forum/styles/prosilver/theme/images/sticky_read_locked_mine.gif -- 3.22kb -> 2.18kb (32.11%)
/forum/styles/prosilver/theme/images/sticky_unread_locked_mine.gif -- 3.24kb -> 2.21kb (31.91%)
/forum/styles/prosilver/theme/images/topic_unread.gif -- 3.25kb -> 2.22kb (31.8%)
/forum/styles/prosilver/theme/images/topic_unread_locked.gif -- 3.27kb -> 2.24kb (31.59%)
/forum/styles/prosilver/theme/images/topic_unread_locked_mine.gif -- 3.30kb -> 2.26kb (31.35%)
/forum/styles/prosilver/theme/images/topic_unread_mine.gif -- 3.31kb -> 2.28kb (31.18%)
/forum/styles/prosilver/theme/images/topic_read_locked_mine.gif -- 3.34kb -> 2.30kb (30.97%)
/forum/styles/prosilver/theme/images/forum_unread.gif -- 3.36kb -> 2.33kb (30.76%)
/forum/styles/prosilver/theme/images/forum_unread_locked.gif -- 3.36kb -> 2.33kb (30.74%)
/forum/styles/prosilver/theme/images/forum_read_locked.gif -- 3.36kb -> 2.33kb (30.72%)
/forum/styles/prosilver/theme/images/forum_read.gif -- 3.37kb -> 2.33kb (30.68%)
/forum/styles/prosilver/theme/images/topic_read_locked.gif -- 3.38kb -> 2.34kb (30.6%)
/forum/styles/prosilver/theme/images/topic_moved.gif -- 3.38kb -> 2.34kb (30.59%)
/forum/styles/prosilver/theme/images/topic_read.gif -- 3.40kb -> 2.37kb (30.38%)
/forum/styles/prosilver/theme/images/topic_read_mine.gif -- 3.41kb -> 2.38kb (30.3%)
/forum/styles/prosilver/theme/images/forum_link.gif -- 3.42kb -> 2.38kb (30.23%)
/forum/styles/prosilver/theme/images/announce_unread.gif -- 3.45kb -> 2.42kb (29.96%)
/forum/styles/prosilver/theme/images/announce_unread_locked.gif -- 3.45kb -> 2.42kb (29.94%)
/forum/styles/prosilver/theme/images/topic_read_hot.gif -- 3.46kb -> 2.43kb (29.82%)
/forum/styles/prosilver/theme/images/announce_read.gif -- 3.47kb -> 2.43kb (29.81%)
/forum/styles/prosilver/theme/images/topic_unread_hot.gif -- 3.47kb -> 2.43kb (29.79%)
/forum/styles/prosilver/theme/images/announce_read_locked.gif -- 3.47kb -> 2.44kb (29.74%)
/forum/styles/prosilver/theme/images/announce_read_locked_mine.gif -- 3.47kb -> 2.44kb (29.74%)
/forum/styles/prosilver/theme/images/announce_unread_mine.gif -- 3.48kb -> 2.44kb (29.72%)
/forum/styles/prosilver/theme/images/announce_unread_locked_mine.gif -- 3.48kb -> 2.45kb (29.69%)
/forum/styles/prosilver/theme/images/topic_read_hot_mine.gif -- 3.49kb -> 2.45kb (29.64%)
/forum/styles/prosilver/theme/images/announce_read_mine.gif -- 3.50kb -> 2.46kb (29.55%)
/forum/styles/prosilver/theme/images/topic_unread_hot_mine.gif -- 3.50kb -> 2.46kb (29.54%)
/forum/styles/prosilver/theme/images/forum_unread_subforum.gif -- 3.55kb -> 2.52kb (29.09%)
/forum/styles/prosilver/theme/images/forum_read_subforum.gif -- 3.56kb -> 2.52kb (29.06%)
/forum/styles/prosilver/theme/images/plupload/throbber.gif -- 1.88kb -> 1.35kb (27.89%)
/forum/adm/images/progress_bar.gif -- 1.32kb -> 1.25kb (5.25%)
/forum/adm/images/bg_button.gif -- 0.18kb -> 0.17kb (4.4%)
/forum/adm/images/gradient2b.gif -- 0.19kb -> 0.18kb (4.17%)
/forum/adm/images/loading.gif -- 1.29kb -> 1.24kb (4.02%)
/forum/styles/prosilver/theme/images/loading.gif -- 1.29kb -> 1.24kb (4.02%)
/forum/assets/fonts/fontawesome-webfont.svg -- 433.96kb -> 425.36kb (1.98%)
/forum/adm/images/bg_header.gif -- 0.41kb -> 0.40kb (1.92%)
/forum/adm/images/bg_tabs_alt2.gif -- 0.41kb -> 0.40kb (1.9%)
/images/exult_logo_nice_dark.png -- 110.70kb -> 109.39kb (1.18%)
/forum/docs/assets/images/bg_header.gif -- 0.67kb -> 0.67kb (1.16%)
/forum/styles/prosilver/theme/images/no_avatar.gif -- 0.91kb -> 0.90kb (0.86%)
/forum/adm/images/no_avatar.gif -- 0.91kb -> 0.90kb (0.86%)
/forum/adm/images/bg_tabs_alt1.gif -- 1.48kb -> 1.48kb (0.53%)
/forum/adm/images/innerbox_bg.gif -- 1.93kb -> 1.93kb (0.4%)
/images/back-dk.gif -- 6.75kb -> 6.73kb (0.25%)

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