The grid used static sizes which meant that changing settings didn't
have an effect on elements of the ui, notably the sidebar width. This
patch makes the `Size` parameter of a cell a function which returns the
`int`, allowing for dynamic sizes.
A `Const` function is also included for ease of use for static sizes.
There is a LoadConf and a LoadConfFromFile.
LoadConfFromFile reads the iniFile into memory and and calls
LoadConf, which executes the old parsing commands from
LoadConf (old func).
The remaining of the LoadConfFromFile is the same as the old OldConf.
