Fix inconvenience with yo's and 3's in title
Fix || in title, some stupid bugs
Add translate and str_replace, fix bug with yo shadowing

Those new modifiers are usually faster according to http://stackoverflow.com/questions/5668947/python-string-replace-vs-re-sub
Cherry-picking (badly commited) Mike's fix of `all' target
Add timing information
Merge branch 'build_assets' into clean-definitions

Conflicts:
	preparation/tools/build_assets.py
Pull some cool modifiers from clean-definitions
Add str_contains_ban modifier
Merge branch 'modifiers' into clean-definitions

Conflicts:
	preparation/modifiers.py
Some simple replacements in definitions text