UOS/Ubuntu/Deepin/Debian on x86/x64/armhf/mips64el

What's Changed

• Hydro objective import by @zhblue in #1003
• resize the bs3 submit window by @melongist in #1004
• 将测试运行放右下角 by @Tiang-88 in #1005
• 左右拖拽的按钮 by @Tiang-88 in #1007
• 2323 by @Tiang-88 in #1009
• 选择题模式状态展示 by @Tiang-88 in #1010
• 没开启测试运行的状态 by @Tiang-88 in #1012
• 优化表格 by @Tiang-88 in #1014
• Scratch3 by @zhblue in #1017
• 结构描述 by @Tiang-88 in #1021
• Update problem_list.php by @Andy-qinyuhai in #1023

Full Changelog: 24.03.26...24.05.24