GUI improvement request

[warp-core]

Through discussions on Discord attempting to help matthew.najmon using ESL2, a number of GUI issues have been highlighted:
Some text isn't easily visible, specifically the text inside the 'name' textbox, but there may be others, because of poor contrast against the background, leading to it being unclear what you need to do before it'll let you click the install button. (At least one other user also experienced this issue).
Some sort of label to indicate why currently unavailable buttons are unavailable (like a tooltip to indicate that you need to enter a name before installing).
Tooltips in general (#146 mentions this).
The option to enable auto-updating on the continuous build (I've seen multiple people expecting it to update continuously on its own, I don't necessarily think this is a universally good idea, but the option for a user to enable it would be good). Alternatively, maybe more importantly, make it more clear what 'continuous' actually means here.