Release branch v2.0.3

[JasonLing95]

Changes

• allow copy-paste input from excel sheet (tab-delimited)
• increase timeout from 7 minutes to 1 hour
• show error message in primer designing modal
• include genome build in primer output pdf
• fix pagination issue
• optimise bam finding find_dx_data.py

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This change is 

[pep8speaks]

Hello @JasonLing95! Thanks for opening this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file cron/find_dx_data.py:

Line 314:45: W605 invalid escape sequence '\Z' Line 417:1: W293 blank line contains whitespace

• In the file primer_designer/services.py:

Line 52:80: E501 line too long (121 > 79 characters) Line 61:80: E501 line too long (96 > 79 characters)