top level: "Root Budget" becomes "Budget"
second level: "Budget" becomes "Fund"
third level and below: "Sub-Budget" is also a "Fund", but for things
like the "create sub-budget" link, they'll be changed to "create child
fund".
Signed-off-by: Galen Charlton <gmcharlt@gmail.com>
This big patch, fix xhtml code, and user interface.
It Delete the term of budget period and use it as "Root Budget".
It add improvment on UI, adding tooltip, and table tree.
* budget period management
* budget management (budgets lines are defined for a given budget period)
budget_owner_search is the popup to select a librarian as budget owner