add link to generate sequence file page
wip, started creation of page where user can generate sequence file from a design id and other parameters
Merge branch 'well_eng_seqs' into custom_sequence_file_generation
Merge branch 'devel' into custom_sequence_file_generation
rename input, remove javascript to disable submit button
add gene names to genbank file filenames
wip, got basic working interface up for custom genbank file creation
refactor of code, moved code from controller to util module
v0.249

    Corrected issue with ensembl server
fix typo
wrap custom sequence generation in try/catch, add pod
add helper text to form, make recombinase pick checkboxes
refactor code, add pod
user can enter a gene first to get a list of designs to pick from when generating custom sequence
make gene search box for custom sequence generation autocomplete
lowercase recombinase names, fix code to pull backbone from well, only get backbone if there is no user specified backbone and the stage is vector
fix tests for EngSeqParams after refactor, also add new tests for generating eng seq params for custon sequences
list designs for gene when generating custom sequence, improve layout of form
show warning message when no designs found for gene
add tests for custom eng seq creation page