Fix attr links in Notebook iframes (#1655)

Author: Conengmo

folium/templates/tiles/cartodbdark_matter/attr.txt

@@ -1 +1 @@
-&copy; <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors &copy; <a href="http://cartodb.com/attributions">CartoDB</a>, CartoDB <a href ="http://cartodb.com/attributions">attributions</a>
+&copy; <a target="_blank" href="http://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors &copy; <a target="_blank" href="http://cartodb.com/attributions">CartoDB</a>, CartoDB <a target="_blank" href ="http://cartodb.com/attributions">attributions</a>

folium/templates/tiles/cartodbpositron/attr.txt

@@ -1 +1 @@
-&copy; <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors &copy; <a href="http://cartodb.com/attributions">CartoDB</a>, CartoDB <a href ="http://cartodb.com/attributions">attributions</a>
+&copy; <a target="_blank" href="http://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors &copy; <a target="_blank" href="http://cartodb.com/attributions">CartoDB</a>, CartoDB <a target="_blank" href ="http://cartodb.com/attributions">attributions</a>

folium/templates/tiles/cartodbpositronnolabels/attr.txt

@@ -1 +1 @@
-(c) <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors (c) <a href="http://cartodb.com/attributions">CartoDB</a>, CartoDB <a href ="http://cartodb.com/attributions">attributions</a>
+(c) <a target="_blank" href="http://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors (c) <a target="_blank" href="http://cartodb.com/attributions">CartoDB</a>, CartoDB <a target="_blank" href ="http://cartodb.com/attributions">attributions</a>

folium/templates/tiles/cartodbpositrononlylabels/attr.txt

@@ -1 +1 @@
-(c) <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors (c) <a href="http://cartodb.com/attributions">CartoDB</a>, CartoDB <a href ="http://cartodb.com/attributions">attributions</a>
+(c) <a target="_blank" href="http://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors (c) <a target="_blank" href="http://cartodb.com/attributions">CartoDB</a>, CartoDB <a target="_blank" href ="http://cartodb.com/attributions">attributions</a>

folium/templates/tiles/openstreetmap/attr.txt

@@ -1 +1 @@
-Data by &copy; <a href="http://openstreetmap.org">OpenStreetMap</a>, under <a href="http://www.openstreetmap.org/copyright">ODbL</a>.
+Data by &copy; <a target="_blank" href="http://openstreetmap.org">OpenStreetMap</a>, under <a target="_blank" href="http://www.openstreetmap.org/copyright">ODbL</a>.

folium/templates/tiles/stamenterrain/attr.txt

@@ -1 +1 @@
-Map tiles by <a href="http://stamen.com">Stamen Design</a>, under <a href="http://creativecommons.org/licenses/by/3.0">CC BY 3.0</a>. Data by &copy; <a href="http://openstreetmap.org">OpenStreetMap</a>, under <a href="http://creativecommons.org/licenses/by-sa/3.0">CC BY SA</a>.
+Map tiles by <a target="_blank" href="http://stamen.com">Stamen Design</a>, under <a target="_blank" href="http://creativecommons.org/licenses/by/3.0">CC BY 3.0</a>. Data by &copy; <a target="_blank" href="http://openstreetmap.org">OpenStreetMap</a>, under <a target="_blank" href="http://creativecommons.org/licenses/by-sa/3.0">CC BY SA</a>.

folium/templates/tiles/stamentoner/attr.txt

@@ -1 +1 @@
-Map tiles by <a href="http://stamen.com">Stamen Design</a>, under <a href="http://creativecommons.org/licenses/by/3.0">CC BY 3.0</a>. Data by &copy; <a href="http://openstreetmap.org">OpenStreetMap</a>, under <a href="http://www.openstreetmap.org/copyright">ODbL</a>.
+Map tiles by <a target="_blank" href="http://stamen.com">Stamen Design</a>, under <a target="_blank" href="http://creativecommons.org/licenses/by/3.0">CC BY 3.0</a>. Data by &copy; <a target="_blank" href="http://openstreetmap.org">OpenStreetMap</a>, under <a target="_blank" href="http://www.openstreetmap.org/copyright">ODbL</a>.

folium/templates/tiles/stamentonerbackground/attr.txt

@@ -1 +1 @@
-Map tiles by <a href="http://stamen.com">Stamen Design</a>, under <a href="http://creativecommons.org/licenses/by/3.0">CC BY 3.0</a>. Data by <a href="http://openstreetmap.org">OpenStreetMap</a>, under <a href="http://www.openstreetmap.org/copyright">ODbL</a>.
+Map tiles by <a target="_blank" href="http://stamen.com">Stamen Design</a>, under <a target="_blank" href="http://creativecommons.org/licenses/by/3.0">CC BY 3.0</a>. Data by <a target="_blank" href="http://openstreetmap.org">OpenStreetMap</a>, under <a target="_blank" href="http://www.openstreetmap.org/copyright">ODbL</a>.

folium/templates/tiles/stamentonerlabels/attr.txt

@@ -1 +1 @@
-Map tiles by <a href="http://stamen.com">Stamen Design</a>, under <a href="http://creativecommons.org/licenses/by/3.0">CC BY 3.0</a>. Data by <a href="http://openstreetmap.org">OpenStreetMap</a>, under <a href="http://www.openstreetmap.org/copyright">ODbL</a>.
+Map tiles by <a target="_blank" href="http://stamen.com">Stamen Design</a>, under <a target="_blank" href="http://creativecommons.org/licenses/by/3.0">CC BY 3.0</a>. Data by <a target="_blank" href="http://openstreetmap.org">OpenStreetMap</a>, under <a target="_blank" href="http://www.openstreetmap.org/copyright">ODbL</a>.

folium/templates/tiles/stamenwatercolor/attr.txt

@@ -1 +1 @@
-Map tiles by <a href="http://stamen.com">Stamen Design</a>, under <a href="http://creativecommons.org/licenses/by/3.0">CC BY 3.0</a>. Data by &copy; <a href="http://openstreetmap.org">OpenStreetMap</a>, under <a href="http://creativecommons.org/licenses/by-sa/3.0">CC BY SA</a>.
+Map tiles by <a target="_blank" href="http://stamen.com">Stamen Design</a>, under <a target="_blank" href="http://creativecommons.org/licenses/by/3.0">CC BY 3.0</a>. Data by &copy; <a target="_blank" href="http://openstreetmap.org">OpenStreetMap</a>, under <a target="_blank" href="http://creativecommons.org/licenses/by-sa/3.0">CC BY SA</a>.