handle cases where the cache is invalid
installation fixes
add short composer dependancy instructions
fix routing not caching properly and sometimes interfering
Merge pull request #219 from nevergone/master

correct title method for returning issue title via json (real fixes issue #1960)
fix issue with incorrect encoding on json response (fixes issue #1477)
rename b2db default_value annotation to default, to avoid mistakes
syntax fixes
caching fixes
reduce pcre dependancy to version 7 (testing)
searchbuilder improvements
- working dropdown filter
- simple keyboard navigation inside a filter dropdown (up/down/select)