0.4.3sk - integrated SK translation

Added Slovak language package (ipk).

0.4.3 - integrated CS translation

Added Czech language package (ipk).

Version 0.4.2. Same as 0.4.1, adapted for OpenWRT after May 2017.

Minor changes adapting to newer versions of OpenWRT. Required for systems built after May 2017. May not with older versions - use 0.4.1 (master branch) with them.
Changes:

• "kerneltz" parameter is now forbidden in firewall rules,
• time format changed.
  Time settings are again in local time, unlike in CC.

Version 0.4.1

Grammar improvements.
Polish language module. More translations will be kindly welcomed.

Version 0.4

New feature: internet tickets.

version 0.3.1

v0.3.1

Update README.md