UI Tweaks to make better UX

[vibhoothi]

Hi,

Few changes

• Disable AWS buttons as we never use them
• Only show Analyzer section for AV1 codecs as it simply do not work for others (yet)
• Do not have the arch toggle, depends on https://github.com/xiph/awcy/pull/360 and https://github.com/xiph/rd_tool/pull/160
• Avoid showing A/B compare as false all the time,
• Show the Task as Set as that is how we submit the job

[vibhoothi]

Some RDTool changes: https://github.com/xiph/rd_tool/pull/162