MDL-39773 bootstrapbase: add style for .centerpadded.
Relocate .centerpadded styling from standard to base themes
Automatically generated installer lang files
Merge branch 'MDL-39773_b_m25' of git://github.com/rwijaya/moodle into MOODLE_25_STABLE

Conflicts:
	theme/bootstrapbase/style/moodle.css
MDL-39472 MUC: Optimise cache::get_from_persist_cache
Automatically generated installer lang files
Revert "MDL-39832 Files: Fixed ETag format according with RFC2616."

This reverts commit 52286ac358bbd81e8291cf0a85054ba63603732e.
Revert "MDL-39832 Files: Revert MDL-39688 commit, 161be9206571787557eb5c11ee440c9e6ae93ca8"

This reverts commit d618e3c07d36272809b84d72df51067f1daa51c7.
MDL-39824: theme_bootstrap: initalise array before use

This causes warnings when no navigation items are returned.

Also fixed some bad whitespace.
Merge branch 'install_25_STABLE' of git://git.moodle.cz/moodle-install into MOODLE_25_STABLE
weekly release 2.5+
MDL-40142 navigation: fixed chainable issue with navigation JS