[IMP] web, *: add kanban column progress bars

* crm, project

Add a new feature which allows to put a progressbar in the kanban
columns. The progressbar shows with the same color the amount of
records whose value of a given field are the same in the column.
It also indicate the sum of another given field or simply the total
number of records. It also allows to subgroup the column content.

To define a progressbar, add this as a direct child of the kanban
arch:

<progressbar field="<name of the field to use for subgroups>"
             colors="{<one possible value for the above field>: <success, warning or danger>, ...}"
             sum="<name of the field to sum or nothing to use total number of records>"/>

Also:
- Properly update record model data's parentID when moving a record
- ...