Force "ssdeephash" searches to use exact matching

The advanced search menu's ssdeep hash searching will fail to find some hashes. The hash value can include characters that cause the search term to end up malformed when compiled as a regular expression.
Setting description and filename to string format

This prevents errors when importing PCAPs in STIX format. Previous error on import attempt was:

ValidationError(PCAP:None) (StringField only accepts string values:['description','filename'])
Merge pull request #160 from TheDr1ver/patch-2

Setting PCAP description and filename to string format
Merge pull request #123 from dsnellgrove/patch-1

Force "ssdeephash" searches to use exact matching
Add Standards API base function
Fix for optional package_intents

Package Intents are optional in STIX, and the original code throws an
exception of the source document does not have this.  Rather than
checking the way it was done, look for the presence of the attribute
and if present, then do the same thing.
Changes based on mgoffin comments
Removed the Cruft and fixed the Campaign reference
Merge branch 'Updates-mgoffin-comment' into StixApi
Remove extra reference to the Reference parameter

Reference is not a parameter passed in on the api call. Forgot to
delete it when cleaning up.
Make Event working function
Fix to properly handle True or False passed

Correct the hack i had in requiring a string of True or False for the
make_event parameter.  Now it properly handles Ture or False in proper
python form.
Merge pull request #167 from sabade/StixApi

Add Standards API base function
Fixing error with standards API upload and source addition.

The standards API needed an 'object_class' defined in meta that it could
use (even though we don't need it yet).

Also there was an issue with source addition when ingesting standards
documents. For some reason a change that we made to fix double-source
uploading magically resulted in no source uploading. I've added the
additions back to fix the problem but have note tested this when
ingesting from TAXII (TAXII server I test with is currently down).
Merge branch 'master' into actor