Review info bar

The "info" bar displayed on top of the left column gathers several elements:

• project name
• targeted modules (nuxeo platform 5.*, DAM, DM)
• online users in collaborative mode

These info are not really obvious, especially if we add new info to improve collaboration NXROADMAP-170:

• pending changes to commit (NXS-1881) ? -> obsolete ticket once NXROADMAP-170 is done
• current branch (NXS-1900) ? -> if still relevant (branch will already be displayed on features screens)
• current tag (NXS-1900) ? -> obsolete need once NXROADMAP-170 is done

See screenshot.

Changes to do:

• update styles and box position
• add icons
• + display current branch ?