DOCS: add english user manual.
DOCS: adds guides for english
DOCS: add guides for english.
DOCS: add guides for english
markdown: fixed bug for commit hash of autolink grammar
markdown: modify project name regex pattern for markdown autolink
markdown: add regex pattern of autolink for commit hash
pullrequest: fix pullRequest merged message
pullrequest: do allow to empty body in create and modify form
CodeHistory: remove selenium.android.library.Logger
Merge branch `issue/remove-android-logger` of insanehong/hive

from pull request 319
Issue: remove bottom line on issue search wrap
Merge branch `issue/remove-line` of insanehong/hive

from pull request 320
Replace momentFromNow(Date) with momentFromNow(Date, language)
Merge branch `userManual-codeReview` of changsung/yobi

from pull request 300
Merge branch `userManual-member` of changsung/yobi

from pull request 301
Merge branch `userManual-notification` of changsung/yobi

from pull request 302
Merge branch `improve/pullrequest` of alecsiel/yobi

from pull request 318
mail: Upgrade play-2-mailplugin to 0.9.1 from 0.8

This fixes a bug that mimetypes are always text/plain in mock mode.

See https://github.com/schleichardt/Play-2-Mailplugin/pull/2
Add missing eol to every text files.