User agent and current url sent as additional_info

Signed-off-by: Peter Legierski <peter@legierski.net>
Restyling tab to allow long labels

Signed-off-by: Peter Legierski <peter@legierski.net>
Prevent redirecting to #

Signed-off-by: Peter Legierski <peter@legierski.net>
Show message if success == false

Signed-off-by: Peter Legierski <peter@legierski.net>
User can specify additional css file that gets loaded after the main css file (good for customisations)

Signed-off-by: Peter Legierski <peter@legierski.net>
The option to disable sending user_agent and/or current_url

Signed-off-by: Peter Legierski <peter@legierski.net>
Added hooks at the end of important functions

Signed-off-by: Peter Legierski <peter@legierski.net>
Merge branch 'hotfix-client-small-improvements'