Add Tab Weights Support

[robertthepie]

Adds weight support for modoptions tabs for sorting purposes.
Section weight can be added to Sections in modoptions via an (int/float) weight variable.
If a weight is not present at the time of populataing the tabs the amount of tabs is used as a negative weight to maintain the current order.

Testing done:

• Modoption tabs maintain current order if no weights present
• Weights added to the modoptions file affect tab sorting

[Damgam]

LGTM