updated requirements to reflect recent changes

requirements.txt

 Beaker==1.6.4
-bottle==0.11.6
-bottle-i18n==0.1.4
+bottle==0.12.7
+bottle-i18n==0.1.5
 flup==1.0.2
 -e git+https://gitlab.labs.nic.cz/router/ncclient.git@c1de638790a368a3c39638b54f2c2ec4e009df50#egg=ncclient
\ No newline at end of file