Fixed broken build system in broken webpack version.
Also updates module system to standardise on ES6 import/exports,
Especially since babel has changed it's 'default' logic for the old
module system.
Fixes#884
This is happening because -
Due to the limitations of modern JavaScript (and the abandonment of Object.observe), Vue cannot detect property addition or deletion. Since Vue performs the getter/setter conversion process during instance initialization, a property must be present in the data object in order for Vue to convert it and make it reactive.
Source: https://vuejs.org/v2/guide/reactivity.html
Also added padding to the icons in the attachment section.
Signed-off-by: Abijeet <abijeetpatro@gmail.com>