Support desc.md priority for block documentation
Merge pull request #23 from bem/LEGO-363

Support desc.md priority for block documentation
Remove luster module dependency. Implement updater module inside app ymodules structure
Simplify application configuration
Update config documentation
Fix auth issue for provider-gh-api module
Merge branch 'BEMINFO-460' into dev

Conflicts:
	configs/common/common.json
Add path to soket file to configuration
Move code for work with socket to util module
Replace Makefile by postinstall.js script. Add aliases into package.json file. Update README.md file
Change default settings
Fix user avatar issue
Simplify code of middleware__page-meta and middleware__page-title modules
Add part of middleware documentation
Simplify lang detection on bem-site-engine level. Implement getlanguages and getDefaultLanguage helpers in util module
Change blocks structure. Incapsulate code of app block
Change deps and launch verification
Add verification for existing bundles before launch
workday 1
Workday 2