* Add center margin option for horizontal dual page view
* Update readme to make the point of the fork obvious
* Center margins now added to large single images that would display in place of two smaller pages
* Cleanup; reworked preference into an int selector to specify which margins to add
* Suggested fixes and and readme reversion which somehow got skipped last commit
* Missed the build block in readme. Oops.
Add login dialog that pops up whenever you are not logged in when trying to browse MangaDex
Remove attempts at porting over chapter read history from older galleries to new ones
Disable latest for ExHentai, it was browse without buttons anyway