Bug fixes (#5218)

* PLT-5319 - Fixing text alignment security modal

* PLT-5280 - Fixing add comment button in RHS mobile

* PLT-5397 - Fixing Floating timestamp on mobile

* PLT-5129 - Hiding formatting help text

* PLT-5242 - Adjusting team sidebar border on IE!!

* PLT-5226 - Placing settings toggle over header

* PLT-5222 - Placed team description tooltip on top

* PLT-5201 - Account settings overlap on mobile

* PLT-5138 - Adding bg to pending post actions

* PLT-5286 - Adjusting play button on youtube videos

* PLT-5313 - Adjusting space between emoji reactions

* PLT-5187 - Adjusting text in channel switcher

* PLT-5399 - Reverting button alignment in modal

webapp/components/select_team/components/select_team_item.jsx

@@ -49,7 +49,7 @@ export default class SelectTeamItem extends React.Component {
                 <OverlayTrigger
                     trigger={['hover', 'focus', 'click']}
                     delayShow={1000}
-                    placement='left'
+                    placement='top'
                     overlay={descriptionTooltip}
                     ref='descriptionOverlay'
                 >