fix: numerous tweaks & tuning

[b5]

• Pull Dataset Modal: “Pull Dataset”
• Pull Dataset Modal: “Pull"
• Commit message placeholder: “Add a message"
• Decrease size Export Modal Section "format" header
• Change nav sidebar icon for collection to faListUL
• Navbar Tooltips: "Collection - Manage Local Datasets" & "Network - Find and Pull Datasets"
• prevent selecting text in Navbar
• prevent selecting text in nav topbar
• bump z-index of transfers menu
• refactor Modal component to match ModalHeader import name

[b5]

For the sake of expediency I'm going to merge this