Czech translation update.
Merge pull request #169 from scarabeusiv/master

Czech translation update
fix startup_gettext() trying to get configured language before session is initialized
Merge branch 'master' of github.com:gothfox/Tiny-Tiny-RSS
enlarge headline excerpt length
minor: remove duplicate check for params
Add JS PluginHost.HOOK_PARAMS_LOADED and PluginHost.HOOK_RUNTIME_INFO_LOADED to notify when interesting info has been created/updated.
Merge pull request #170 from supahgreg/hook_params_runtime_loaded

Adding JS hooks for init params and runtime info
pluginhost: remove session cache for storage
Merge branch 'master' of github.com:gothfox/Tiny-Tiny-RSS