fix(notifications): make use of fixed ordering

so now it first fetches last notification and then it's using
its `_created` date to query for changes after.
fix(styling): change button styling through whole app
fix(styling): navigation changed
fix(styling): Improve scratchpad
fix(styling): scratchpad
fix(styling): change dropdowns
fix(styling): general changes
fixing(styles): make some minor changes

+ change sd-search directive
fix(styling): minor fixes