Release v0.27.2: Custom hashtags

Makes hashtags case insensitive by @vitorpamplona
Adds special #Bitcoin hashtag icon by @believethehype
Adds special #Nostr hashtag Icon by @believethehype
Minor changes in Hungarian Translations by @ZsZolee
Improves NIP-19 Parsing in content by @vitorpamplona
Disables online search after leaving the Search screen by @vitorpamplona
Fixes Background color of the badge's description @vitorpamplona
Fixes some missing messages on chat by @vitorpamplona