Pachli 1.1

Fixes:

-  Use the correct contrast colour on hashtag tab chips 
-  Scale the monochrome icon to fit 
-  Restore the user's home timeline position 
-  Ensure refreshing does not create a gap in the timeline 
-  Show the FAB according to the user's preferences 
-  Fix toolbar flickering when scrolling lists 
-  Fix crash on entering MainActivity on Pixel C devices