remove untested misplaced special treatment of Ohm
cleanup error generators
do not mutate provided options
extract select option tags building
fix html_safe in labeled group
do not touch options, allow button_to with block and no caption
remove old syntax with sticking boolean to options array/hash
refactor render partial
Change request.accepts to an empty array if request.accepts is `*/*`.
provide more examples for the instantiation of the cache stores
Merge pull request #1467 from minad/cache-examples

provide more examples for the instantiation of the cache stores
Merge pull request #1466 from padrino/fix-sinatra-edge

Change request.accepts to an empty array if request.accepts is `*/*`. Fixes #1465
Merge pull request #1457 from padrino/cleanup-helpers

Cleanup helpers