Support ull variables
Remove unneeded variable for proxy_url
Remove unneeded variable for useragent
Remove unneeded variables for max_conns{,_host}
Support "auto" for accept_languages in WebKit1
Block zoom_step from being < 0
Simplify zoom_level getter/setter
Support enable-scripts in WebKit2
Guard against NULL from custom_encoding
Merge branch 'mathstuf/dev/cleanup' into mathstuf/next

* mathstuf/dev/cleanup:
  Guard against NULL from custom_encoding
  Support enable-scripts in WebKit2
  Simplify zoom_level getter/setter
  Block zoom_step from being < 0
  Support "auto" for accept_languages in WebKit1
  Remove unneeded variables for max_conns{,_host}
  Remove unneeded variable for useragent
  Remove unneeded variable for proxy_url

Conflicts:
	src/variables.c
Fix page_view_mode values on WebKit1
Merge branch 'dev/update-webkit-options' into mathstuf/next

* dev/update-webkit-options:
  Fix page_view_mode values on WebKit1
  Support ull variables
Fix app_cache_directory variable
Remove unused functions
Move constants together
Merge branch 'dev/threaded-uzbl' into mathstuf/next

* dev/threaded-uzbl:
  Move constants together
  Remove unused functions
  Fix app_cache_directory variable