Re-implement some Akkoma specific things + hide filter settings by @Jacocococo in #729 some small improvements and bugfixes

A fork of the Mastodon Android app adding important features that are missing in the official app, focusing on Glitch compatibility, a pretty UI and adding new features that I feel make using the Fediverse a more pleasant experience. Key features Unlisted posting Allows you to post publicly without having your post show up in trends, hashtags or public timelines (i.e., in the tabs “Community”, “Federated” and “Posts”). Federated timeline This allows you to chronologically see all Public posts from people on all other Fediverse neighborhoods your home instance is connected to. Customizable timelines You can customize Megalodon’s home tab and not only add local and federated timelines, but also pin lists and hashtags. Draft and schedule posts Allows to prepare a post and schedule it to send it automatically at a specific time. Anti-Features: NonFreeNet (this application promotes/depends a non-Free network service): ⇒ Firebase Cloud Messaging