Add number of messages

[Info 3bits]

Add the number of messages using the badges bootstrap component

[Info 3bits]

fix #176

→ <<cset 3e4bb6e65a91>>

[Info 3bits]

fix #176

→ <<cset 3e4bb6e65a91>>

[Info 3bits]

fix #176

→ <<cset 5bdeaffb5b77>>

[Info 3bits]

fix #176

→ <<cset 5bdeaffb5b77>>

[Info 3bits]

The number of messages bubble is now under the bootstrap control using the badge class. The shape of the badge change depending the number and if no messages then the badge is not displayed.

The only change made is the background colour (#ff0000) in the custom.css. The old message bubble class has been removed.