JBIDE-17406 o.j.t.jst.jsdt has no source folder pointed in build.properties.

Source folder is added to build.properties

Signed-off-by: vrubezhny <vrubezhny@exadel.com>
JBIDE-17169 HTML5 Palette templates should be available for content assist by key words

Added keywords to Mobile Palette items. Modified xml tag completion
proposal computer to apply keyword when cursor is within a text node
to proposals and set high relevance to those having the keyword.
Tests are added.
JBIDE-17408 use tern 0.2.0.201405210810 instead of 0.2.0 (with version range)
[JBIDE-17566] tern integration is not working OOTB if node.js is not installed

add "x-installation:=greedy" for optional tern.node platform specific bundles
JBIDE-17611 Error when calling Tern code assist via command

Tern is forced to use only non-native Node.js install

Signed-off-by: vrubezhny <vrubezhny@exadel.com>