Fix "Status submission box overlap and alignment issues"

closes #584 (closed)

i'd wait until !824 (merged) is merged in since it changes some styles there and fix them if needed respectively

added 7 commits

• a69a8406...ac46de39 - 6 commits from branch pleroma:develop
• 07daa9fd - reset margin property of form controls

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added 7 commits

• 07daa9fd...c0c012cc - 6 commits from branch pleroma:develop
• 59942624 - reset margin property of form controls

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added 26 commits

• 59942624...c4fcdc71 - 25 commits from branch pleroma:develop
• 90fda1f2 - reset margin property of form controls

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merged

mentioned in commit 752ee9d7