Fixes - Accounting reports / KPIs display / HR figures

Fixes

• Superannuation balance to show current balance without selecting any time range
• Leaves balance to show Sick/Vacation leaves balance without selecting any time range
• Aged payables and receivables to display total values instead of values for fixed period
• Widget name edition (layout + add buttons)
• Widgets top bar layout (title and buttons)
• Limit KPI value to avoid scope desync
• KPI alert units
• Invoices list display (big values were hidden)
• Custom calculation: fix formula by adding spaces before and after account balance placeholders ({1}...)
• Sales widgets: fix string matching logic for quantity selectors
• Widget loader to be center on Firefox

Adds

• Custom filter for dates based on the selected period
• KPI loader when attaching a KPI
• Better design and consistency for accounting reports: cash summary, profit and loss and balance sheet

Removes

• Expand Kpis functionality