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.
* fix a bug for new orders budget : the Asort1 was displayed by default. Now, it's the sortN_authcat of the 1st budget (the one selected by default)
* change in GetBudgetAuthCats : returns all auth values used by at least one budget (not Asort* categories, as previously)
* code cleaning in GetAuthvalueDropbox (and select aqbudgets.* instead of *, to avoid data corruption due to duplicate column name)
* there can be more than 1 active period. This has been added to deal with temporary budgets (like "10000€ to spent in the next 3 months")
* all active budgets are retrieved
* budget available for everyone now displayed correctly
also :
* fixing some hardcoded values
* removing a warn