[DS-1530] Insist on a nonblank email address
Merge pull request #407 from mwoodiupui/DS-1530

[DS-1530] create-administrator and skipping the email field
Fixed bugs and edited inadequate configs
Added a new modifier LanguageCondeModifier
Fixed a wrong conditional expression
Fixed a typo
fix arxiv BTE configuration
fix pubmed BTE configuration
fix crossref BTE configuration
fix 'BTE to DSpace' configuration
remove warning in LanguageCodeModifier
Merge pull request #386 from zuki/DS-1777

DS-1777 Bugs and inadequate configs for "Bibliographic import and lookup in Submission" and a new modifier
DS-1811 Removing a collection fails if non-Solr DAO has been used before for item count