Dashboard Update:

- new feature in menu called Group OC - basically it works the same way as Group Config
Each rig can use its individual OC settings (like before) or you can optionally link selected rigs to any OC group.
For some this feature will be highly usefull but for some not so much as some people are Overclocking each gpu individually.
- after creating OC Groups, you can select multiple rigs on your list and link them to specific Group OC or unlink then to use their old OC values (old individual values are preserved for this purpuse
- Rig List now has new collumn called Group OC (when it is empty, rig is using its own OC values)
- in rig list you have ability to filter rigs by Group OC
- added help tooltips in overclock windows near each field