DOC-3043 Wiki JAVA APIs: Improve English and consistence
WIKI-746 Slow invocation of PageImpl.checkin for wiki page update

Fix description:
* When a wiki page is modified, a new version will be created only for wiki's content child node instead of the whole wiki page node.
  That allows to improve much the performance.
* Migrate legacy wiki page on the fly, when the user opens the wiki page itself.
WIKI-681 Improve the loading speed of search scope at Wiki Advanced Search Form

Fix description:
* Use Space Switcher to choose search scope in Wiki Advanced Search.
  There is no longer all users' wiki and therefore improves performance
Merge commit 'a1e9facbcdf6e794a0a280e4e5da5dbbb0767c2a' into HEAD
it injection on 20131112-051452
WIKI-740 WikiServiceImpl.getPageById invocation causes slowness

Fix description:
* Problem analysis In the same HttpRequest, same wikipage is searched from JCR many times
* How is the problem fixed?
Using a cache to store wiki page by Phase (Process Render, Process Action, Process Decode).
After one of these phases completing, cache is cleaned
WIKI-743: Slowness when checking permissions: Utils.canModifyPagePermission

Fix description: Avoid redundant call session.save() when getting Wiki object
Merge commit '8793171b443e06dd9cca3144e2232d62d7d80f69' into HEAD
it injection on 20131114-052122
WIKI-742: Slowness in Wiki BreadCrumb Rendering
Merge commit '87718e29e8867818ee2ef17c7c9373f4df2b5a58' into HEAD
zh-CN injection on 20131115-051934
Crowdin injections w46 (from 20131112 to 20131115)
Merge branch 'stable/4.0.x' into feature/4.0.x-translation

Conflicts:
	wiki-webapp/src/main/resources/locale/portlet/wiki/WikiPortlet_it.properties
es-ES injection on 20131116-052112
zh-CN injection on 20131116-052112
en injection on 20131117-051149
Revert "WIKI-740 WikiServiceImpl.getPageById invocation causes slowness"

This reverts commit 3bd18f292806b32c8cf00b29d0f661fee0fb76ad.
fr injection on 20131118-051951
ar injection on 20131118-051951