Merge pull request #215 from mannol1/master

Fix ringing sounds
bump version to 0.4.7
attempt to fix travis with clang
temporarily disabling clang in travis script due to weird errors unrelated to toxic
file transfer improvements and bug fixes
refactor friend/blocklist, dynamically allocate memory
convert bytes for file transfer message, general fixes
fix bug where tab alert colours weren't being properly prioritized
prevent statusmessage from wrapping on prompt screen
Use DNS server list instead of hard coding domains/keys
a few dns fixes
a few fixes
ignore invalid file data callbacks
add option to not connect to the DHT network
add option to specify DNSservers path
toxic.conf.5: Remove default config from man page

The reference to the config example in the FILES section should be sufficient.

Signed-off-by: Loui Chang <louipc.ist@gmail.com>
Merge pull request #218 from louipc/louipc

toxic.conf.5: Remove default config from man page
toxcore API update, add option to force TCP connection
help: lowercase keybinding hints for clarity.

Seeing the uppercase character I expected it to be the actual key.

Signed-off-by: Loui Chang <louipc.ist@gmail.com>
ipv6enabled parameter was removed in toxcore.

Signed-off-by: Loui Chang <louipc.ist@gmail.com>