Merge branch 'hotfix/v0.8.1'
Open links to md with a new instance of cutemarked, open external links wih desktop service.
Add remark for translators
Fix clashing shortcuts

Changed shortcuts for Blockquote to Ctrl+Shift+Q and for
Insert Image to Ctrl+Shift+I to prevent ambiguous shortcuts
on Linux.

Resolves #115.
Fix Word Wrap and Show Special Characters

Fixed the initial status of the word wrap and the
show special characters options.

- Use toggled() signal for the show special characters action
- Change default checked state for the word wrap action

Resolves #107
Start second instance detached. Use the file path when calling the second instance.
Make hoedown library optional (#121)

Add a compile-time option with_hoedown to enable hoedown support to
the qmake project files.

qmake CONFIG+=with_hoedown
Fix integration tests (#121)

Only build and run the HoedownMarkdownConverterTest when the
compile-time option with_hoedown was set.
Update HTML preview when converter is changed

Automatically update the HTML preview after the markdown
converter is changed in the options dialog.
Supported markdown extensions

Add method to query a MarkdownConverter implemention for supported
converter options.
Disable unsupported extensions in menu

Disable all unsupported Markdown extensions in the menu.
Use url.toLocalFile instead of url.path.
Merge pull request #118 from Slesa/feature/ExternalLinks

Open links to markdown documents with a new instance of CuteMarkEd and open external links in the prefered web browser.
Merge pull request #124 from cloose/feature/hoedown-optional

Make hoedown library optional (#121)
Merge pull request #125 from cloose/feature/improve-hoedown-integration

Improve integration of multiple markdown converters
Fix build using with_hoedown option
Bumped version number to 0.9.0
Update translations
Add discount and hoedown libraries to WiX XML configurationfile
Update RPM spec file