Update README.md
Joined all the attribute readers.
Moved long assignment into smaller more readable lines.
Cleaned the long unreadable statement into smaller seperate lines.
Removed extra empty line at the body end.
Changed to Ruby 1.9+ hash syntax.
Avoid double negation.
Allow app to start w/o ERRBIT_EMAIL_FROM
Merge pull request #712 from bdehamer/optional-errbit-email-from

Allow app to start w/o ERRBIT_EMAIL_FROM
Merge pull request #702 from brianvanburken/refactoring

Legibility improvement on ErrorReport
Merge remote-tracking branch 'upstream/master'
Update from upstream master.
Merge pull request #690 from tomciopp/patch-1

Update README.md
Update README to add other deps

When installing the app from a fresh debian install I noticed that bundler errored out due to it missing these two dependencies.
It's an obvious fix once you hit the error but just popping this here as it's a simple update.
Merge pull request #732 from corin12355/patch-1

Update README to add other deps
By all crawlers by default
Merge pull request #743 from nfedyashev/patch-2

Disable all crawlers by default
Adds rudimentary specs for problems/search
Render partial for problem search

Removing duplication by rendering problems/search partial.
Merge pull request #747 from robinboening/feature/date_filter

Render partial for problems/search form and add specs