WIKI-748: TC-4.0.3 [Unified Search] Slowness in WikiSearchServiceConnector.search

WIKI-748: TC-4.0.3 [Unified Search] Slowness in WikiSearchServiceConnector.search

WIKI-748: TC-4.0.3 [Unified Search] Slowness in WikiSearchServiceConnector.search

WIKI-748: Fix missing of excerpt content

Conflicts:

	wiki-service/src/main/java/org/exoplatform/wiki/service/search/WikiSearchData.java