[autocomplete] Update completions for literal datatypes and language tags
Turtle statements are be collapseable and indented properly
[grammar] Update language grammar

+ support for object lists
+ @base directive
+ support full IRIs (not only URIrefs) as SPOs
+ multiline literals
+ fix support for autocompletion of literal datatypes/langtags
Rearrange menu items
Add .gitignore files
[autocomplete] Complete rework of autocomplete for prefixes and resources

+ for literal datatypes (for now only XSD)
+ for literal language tags
+ for prefixes and their according IRI/ref (automagically fed by
prefix.cc)
+ for all prefixed resource names (automagically from vocab/onto URI
when machine readable representation exists)
Rearrange menu items

+ "Help" was renamed to "About"
+ Change menu item order
Only @prefix directives are listed in symbol list
Introduce automatic in-place documentation of current resource
[grammar] Updated language grammar
Add list icons

Seems like support for list item icons is broken in TM2
Update .gitignore

+ Remove grammar test docs
Update README
[theme] Fist commit of SemwebCadet

Atm. no differences to SpaceCadet; I will slightly optimize it for
turtle documents.
[grammar] Began to rewrite grammar based on parser spec

Discovered incredibly awesome part of PCRE spec: named subpatterns for
use by reference only. Still fiddling out how to make use of it with
Oniguruma regex engine...