This commit also removes the “import a single Trello card” as we couldn’t figure
out some reasonable use case.
We also create a new publication on the server to provide the minimal user
profile informations required to display an avatar.
The new user interface uses the flexbox box model has it's primary way
to organize the layout. Unfortunately IE have a non-negligible amount
of subtitle and tricky bugs with its flexbox implementation.
This one was about a `flex-grow: 1` element not growing in a container
which size is defined with `min-height`. See the bug in Microsoft bug
tracker for more details:
https://connect.microsoft.com/IE/feedback/details/802625/Fixes#225
I decided to create my own and not to use a community package, because
1. it's straightforward
2. it's better integrated with our others libs such as EscapeActions
3. monitoring third-party packages evolutions (eg, CSS changes) is a
lot of work.
This is basically the same rationale than for our other generic UI
components such as the Popup/Popover.
This commit also slightly modify the general layout to remove
unnecessary wrapper DOM nodes.
