[Feature] Improve button names

[enfJoao]

Is your feature request related to a problem? Please describe.
These buttons are near impossible to understand their function by their names.

Describe the solution you'd like
A couple renamings and tooltips (show a helper on mouseover) would improve the understanding of what they do without resorting to complex instructions.

Import WeiDU.log => Import mod selection from WeiDU.log (This only selects the components, you still need to order the mods)
Set-InstallSequence => Load mod order from list (This will load the mod and component order from the list on the left)
Import install sequence => Import mod order from file
...