Remove 60 seconds limit in web crawl pause
Implements #1290
Initial version of #1290
Implements #514
Implements #514
Fix #1224

Conflicts:
	src/main/java/com/jaeksoft/searchlib/webservice/crawler/filecrawler/FileCrawlerImpl.java
	src/main/java/com/jaeksoft/searchlib/webservice/crawler/webcrawler/WebCrawlerImpl.java
Proxy can be enabled/disabled #1290
Merge pull request #1296 from emmanuel-keller/1.6

Bug fixes and improvements