change attribution for custom-searchengines

allowing 'html' in attributions for custom-searchengines
Update C4GTextField.php

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Update C4GTextField.php

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Update C4GFeatureEditor.php

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Update C4GGeoPicker.php

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Update C4GImageSize.php

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adapted comment
tooltip-information for editor icons
mouseover on editor-icon showes tooltip instead of name if set in the locstyle informations
too much: tooltips instead of tooltip :)
Update TERMS_OF_USE.txt
text changed in backend
Update README.md
Update README.md
Update README.md
Merge remote-tracking branch 'remotes/origin/master' into release-1.0.0

Conflicts:
	C4GMaps.php
	README.md
	dca/tl_c4g_map_profiles.php
	html/js/C4GArgParser_src.js
	html/js/C4GLayerSwitcher_src.js
	html/js/C4GMapsBackend_src.js
	html/js/C4GMapsEditor.js
	html/js/C4GMapsEditor_src.js
	html/js/C4GMapsRouter_src.js
	html/js/C4GMapsToolbox_src.js
	html/js/C4GMaps_src.js
	html/js/C4GPermalink_src.js
	languages/de/modules.php
	languages/de/tl_c4g_map_profiles.php