0f37181876
Currently clicking some web installer buttons, like 'Lock bootloader', can interrupt flashing and some, like 'Flash release', can cause multiple instances of the "flashing" process to initiate. This commit adds support for enabling/disabling web installer buttons and disables buttons that might interrupt flashing while flashing. Clicking the 'Download release' button while a download is in progress can cause multiple downloads to initiate, so disable the button during downloads and enable it afterwards.