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po: resync base translations
remove .i18n annotations from controller files
libs/web: Allow to disable buttons in cbi models from the controller
libs/web: various changes in template library

	- rename sanitize_pcdata() and sanitize_utf8() to pcdata() and utf8()
	- implement striptags()
libs/core: remove unused luci.util.escape(), map luci.util.striptags() to luci.template.parser.striptags()
modules/admin-full: filter localhost<->localhost connections live connection graph
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modules/freifunk: simplify colors in map, add a legend
modules/freifunk: remove empty dir
applications/luci-olsr: sync colors with map, add legend
modules/freifunk: sync translations
libs/web: let luci.i18n.setlanguage() return the lang that was actually loaded
applications/luci-statistics: fix typo in collectd cbi