While the required changes for TB128 are added - for example the changed parameters for FilePicker::init() - this PR also replaces the Experiment to delete attachments by browser.messages.deleteAttachments().
This also adds a showPromptToUser() Experiment, which will become obsolete once the modalTabs API has been added (planned for this cycle).
This PR aims to fix #25
While the required changes for TB128 are added - for example the changed parameters for FilePicker::init() - this PR also replaces the Experiment to delete attachments by browser.messages.deleteAttachments().
This also adds a showPromptToUser() Experiment, which will become obsolete once the modalTabs API has been added (planned for this cycle).