Add explanation of Tor battery setting, update network settings screenshot

See merge request !7

link google play manual.md

See merge request !6

remove 'PT Sans' to get rid of the fonts.googleapis.com import

Closes #1

See merge request !5

fixes #1

Signed-off-by: Vieno Hakkerinen <txt.file@txtfile.eu>

Add App Lock feature to Manual

See merge request !3

Update messaging screenshot to latest version

See merge request !4

Add section for Settings a and Dark theme

See merge request !1

# Conflicts:
#   README.md

Fixed link in README.md

See merge request !2