remove unused/not-needed-anymore and remove network access

flatpak/.local/share/flatpak/overrides/com.github.johnfactotum.Foliate

@@ -0,0 +1,2 @@
+[Context]
+shared=!network

flatpak/.local/share/flatpak/overrides/com.github.ransome1.sleek

@@ -1,2 +1,3 @@
 [Context]
+shared=!network
 filesystems=~/.local/share/todo.txt;!home

flatpak/.local/share/flatpak/overrides/io.github.celluloid_player.Celluloid

@@ -1,2 +1,3 @@
 [Context]
+shared=!network
 filesystems=!xdg-pictures

flatpak/.local/share/flatpak/overrides/io.github.gitahead.GitAhead

@@ -1,2 +0,0 @@
-[Context]
-filesystems=~/Code;~/.dotfiles;!home

flatpak/.local/share/flatpak/overrides/org.gimp.GIMP

@@ -1,2 +1,3 @@
 [Context]
-filesystems=xdg-pictures;xdg-download;!host
+shared=!network
+filesystems=xdg-download;xdg-pictures;!host

flatpak/.local/share/flatpak/overrides/org.gnome.Builder

@@ -1,2 +0,0 @@
-[Context]
-filesystems=!host

flatpak/.local/share/flatpak/overrides/org.onionshare.OnionShare

@@ -1,2 +0,0 @@
-[Context]
-filesystems=!home:ro;xdg-download

flatpak/.local/share/flatpak/overrides/org.signal.Signal

@@ -1,3 +0,0 @@
-[Context]
-sockets=wayland
-filesystems=!xdg-public-share;!xdg-videos;!xdg-pictures;!xdg-music;!xdg-desktop;!xdg-documents

homebrew/Brewfile

@@ -45,6 +45,7 @@ cask "gimp"
 cask "google-chrome"
 cask "iterm2"
 cask "keka"
+cask "mattermost"
 cask "rectangle"
 cask "signal"
 cask "sleek"