gen_rst to use css tooltip instruction
remove gallery css chunk from theme css
Remove JS from examples gallery
Examples gallery css file
fix gen_rst file extension
add crossvalidation
DOC add missing import to plot_underfitting_overfitting.py, fix plot height.
Merge branch 'pr/3914'
Update what's new
FIX copy paste mistake
Merge pull request #3925 from Titan-C/cssbox

Nilearn css template for the examples gallery
Added feature to fix #1523
ENH decision_function now returns #votes and scaled scores.