fix all warnings
fixed: DepthColorizer hides standard Current Line highlighting
fix code formatting issue
add IProjectProvider and DummyProjectProvider (for standalone fsx files)
rename DummyProjectProvider -> VirtualProjectProvider
fixed: Rename refactoring dialog does not appear if renaming symbol is not declared in the current project
reformat code according to our style
Merge pull request #87 from vasily-kirichenko/master

fixed: DepthColorizer hides standard Current Line highlighting
Merge pull request #89 from vasily-kirichenko/rename-dialog-fixes

Rename refactoring dialog does not appear if renaming symbol is not declared in the current project
Move most of constant strings to Resource module

Also display error icons in message boxes.
Merge branch 'vasily-kirichenko/standalone-files'
fixed: ProjectProvider.CompilerOptions fails if there are empty references
update FSharp.Compiler.Services to 0.0.22

uncomment LanguageService tests related to find usages of generic parameters and statically resolved type parameters
Merge pull request #97 from vasily-kirichenko/master

fixed: ProjectProvider.CompilerOptions fails if there are empty references & update FSharp.Compiler.Services to 0.0.22
Fix missing declaration locations in type declarations
Merge pull request #99 from dungpa/type-rename-refactoring

Fix missing declaration locations in type declarations
Remove unnecessary workarounds on declaration locations
Compare by full paths to guard against combined paths

When a file is added in a Compile node with Link subnode,
location.FileName will be returned in the form of combined paths.
Merge pull request #100 from dungpa/revert-declaration-locations

Updates on handling declaration locations