python: fix read of return value for callbacks returning an integer in Python 2.x (closes #125)
irc: display locally away status changes in private buffers (in addition to channels) (closes #117)
aspell: rename variable "utf8_char_int" to "code_point"
core: hide message timestamp in bare display if timestamp is disabled in buffer (closes #129)
script: fix display of curl errors
core: add Curl options for versions 7.29.0 to 7.37.0
core: display a warning on startup if $TERM is not screen(-256color) under screen/tmux

The same warning is displayed with command "/debug term".
core: update German translations
doc: update German auto-generated files
core: send signal key_combo_xxx even for unknown combos