[R-Model] Fixed NPE if Sweave inline elements contains R definitions

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>
[RPkg-Mgr] Fixed label in pkg manager

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>
[*] Updated declarations for StatET 3.5

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>
[Sweave, RTM, Build] Moved Sweave and RTM plug-ins to separate modules
'statet-redocs'and 'statet-rtm'

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>
[*] Adapted to changes in ECommons-UI (StringVariableUtil) and LTK
(de.walware.ecommons.ltk.core.model)

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>
[R-Help] Adapted to changes in MPBV

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>
[R-Model, R-Editor] Adapted to changed interface for attachments of AST
nodes

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>
[R-Editor] Fixed PresentationReconciler

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>
[R-Editor] Fixed hyperlink labels

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>
[R-Help] Fixed lock lease of R help

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>
[R-Env, R-Console] Added commands to Update/Reset R environment index

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>