V7 Beta 6+1 - macOS fixes

This version fixes a lot of issues that were effecting macOS users!

Fixes:

• Fixed issue with theming making the preview on the MultiRPC page not be white text
• Fixed discord check overlay not closing on macOS when discord is open
• Fixed macOS getting into loop with custom page popup's
• Fixed crash when saving themes

Changes:

• Made gif's show up like in discord (Need to add the corner effects on gif images still)
• Added ability to disable min and restore buttons (Windows only, lets us disable them when needed. Will add for other OS's soon™️)
• Many behind the scenes changes
• Popup's are now centered when opening
• The start of a asset manager (For now it only grabs MultiRPC assets)
• Fixed Button 2 TextBox saying "Button 1 Text"