Merge pull request #253 from theponti/development

Fix navbar style on small devices
Merge pull request #254 from theponti/development

Add new classes to index and show list sections; Send color with categor...
Merge pull request #257 from theponti/development

Development
Fixes #258
Merge pull request #259 from theponti/fix/categories-save-keydown-#258

Fixes #258
Center #content; Remove extraneous .center class from .list sections