changed getting started to welcome screen

Conflicts:
	user-console/source/org/pentaho/mantle/public/home/css/home.css
	user-console/source/org/pentaho/mantle/public/home/index.jsp
- Updated to latest version of the welcome screen
- New welcome screen version
- New images for welcome screen and added back index.html that was deleted by accident
Iframe resize and iframe scroll hidden
Switch to steel-wheels folder fixed
Removed border and background color from iframe

Conflicts:
	user-console/source/org/pentaho/mantle/public/home/css/home.css
BISERVER-10116 Samples should be checked in individually, the
assembly should produce the samples zip.

Conflicts:
	assembly/package-res/biserver/pentaho-solutions/system/default-content/samples-5.0.zip
New CE samples
eesamples icons removed + css re-organized
BISERVER-10102 - Create new button pluginable.
Marketplace link only placed if the plugin is available.
Plugin's overlays are added dynamically if its overlay contains the overlay launcher as it was in 4.8.
Plugin links in create new are localized using the plugin resources
[BISERVER-10103] - Initial solution import now imports plugin-samples
BISERVER-10102 - Fixed IE8 issues
- Updated welcome screen (Added a blog entry)
BISERVER-10102 - Fixed IE8 issues
added marketplace to CE pre-installed plugins
BISERVER-10102 - Fixed IE8 issues

Conflicts:
	user-console/source/org/pentaho/mantle/public/home/js/home.js
BISERVER-10102 - Added missing change on index.jsp to add container for created buttons
Conditional plugin-samples installation via property in assembly.properties
DOC-1662 - Updated BI Documentation page
merged samples with mdamour1976 samples
Merge pull request #924 from webdetails/master

Changes for CE Release