Show Flow Nodes modal

• Remove boarder around text and align text left. (Flow Node Filter margins)
• Update close icon to one used in analysis page, at an appropriate size.
Design: [zpl.io/V1QrxL5]

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Add Duration Filter modal

• Change select wording to 'More than' & 'Less than'
• Re arrange inputs on page
(Design is a suggestion, let's use the most appropriate spacing and layout, can discuss in person)

Design: [zpl.io/aBK9z7q]